A US Marine weapons instructor holds an XM8 Carbine during the Infantry Operations Chief Symposium in August 2005 The XM8 is a developmental U.S. military designation and project name for a lightweight assault rifle system that was under development by the United States Army from the late 1990s to early 2000s. The Army worked with the small arms manufacturer Heckler & Koch (H&K) to develop the system to its requirements in the aftermath of the OICW contract, for which H&K had been a subcontractor to ATK. Although there were high hopes that the XM8 would become the Army's new standard infantry rifle, the project was put on hold in mid 2005, and was formally cancelled on October 31, 2005. Image File history File links Download high resolution version (1656x650, 52 KB) Summary XM8 - Final Version (From the official HK brochure) Licensing This is a copyrighted image that has been released by a company or organization to promote their work or product in the media, such as advertising material or...
The AK-47 is the worlds most common assault rifle. ...
The service rifle (also known as standard-issue rifle) of a given army or armed force is that which it issues as standard to its soldiers. ...
Heckler & Koch GmbH (H&K) (pronounced [1]) is a German weapons manufacturing company famous for various series of small firearms, notably the MP5 submachine gun, the MP7 personal defense weapon, USP series of handguns, high-precision PSG1 sniper rifle, and the G3 and G36 assault rifles. ...
The XM8 is the project name for a lightweight, compact assault rifle under development by the German small arms manufacturer Heckler und Koch (H&K) on behalf of the US Army. ...
The XM8 is the project name for a lightweight, compact assault rifle under development by the German small arms manufacturer Heckler und Koch (H&K) on behalf of the US Army. ...
The XM8 is the project name for a lightweight, compact assault rifle under development by the German small arms manufacturer Heckler und Koch (H&K) on behalf of the US Army. ...
This article does not cite its references or sources. ...
The XM8 is the project name for a lightweight, compact assault rifle under development by the German small arms manufacturer Heckler und Koch (H&K) on behalf of the US Army. ...
This article does not adequately cite its references or sources. ...
U.S. Military 5. ...
In firearms terminology, an action is the system of operation that the firearm employs to seal the breech (in a breech-loading firearm), and to load consecutive rounds. ...
The gas-operated system for implementing automatic reloading of a firearm is one of five such systems, the others being recoil-operated, gatling, chain, and blowback. ...
Rotating bolt of a Sig 550 rifle. ...
(for paintball markers also)Rate of fire is the frequency at which a specific weapon can fire or launch its projectiles. ...
A guns muzzle velocity is the speed at which the projectile leaves the muzzle of the gun. ...
A 30-round STANAG magazine. ...
The Beta C-Mag is a hundred-round high capacity magazine designed for assault rifles and SMGs firing the 5. ...
A red dot sight is a type of optical aiming device for firearms. ...
Image File history File linksMetadata Download high resolution version (954x1400, 421 KB) Summary from: http://www. ...
Image File history File linksMetadata Download high resolution version (954x1400, 421 KB) Summary from: http://www. ...
United States Marine Corps Emblem The United States Marine Corps (USMC) is the second smallest of the five branches of the United States armed forces, with 170,000 active and 40,000 reserve Marines as of 2002. ...
The AK-47 is the worlds most common assault rifle. ...
The United States Army is the largest branch of the armed forces of the United States. ...
Small arms captured in Fallujah, Iraq by the US Marine Corps in 2004 The term small arms generally describes any number of smaller infantry weapons, such as firearms that an individual soldier can carry. ...
Heckler & Koch GmbH (H&K) (pronounced [1]) is a German weapons manufacturing company famous for various series of small firearms, notably the MP5 submachine gun, the MP7 personal defense weapon, USP series of handguns, high-precision PSG1 sniper rifle, and the G3 and G36 assault rifles. ...
The XM29 Objective Individual Combat Weapon (OICW), also referred to as the Selectable Assault Battle Rifle, is a highly advanced new assault rifle / grenade launcher system slated to replace certain M-16 assault rifles with M203 underslung grenade launcher. ...
Alliant Techsystems NYSE: ATK is a major US aerospace and defense contractor with sales of approximately USD $2. ...
This is a list of cancelled military projects. ...
is the 304th day of the year (305th in leap years) in the Gregorian calendar. ...
Year 2005 (MMV) was a common year starting on Saturday (link displays full calendar) of the Gregorian calendar. ...
General Dynamics was involved in latter stages and H&K had plans to produce the rifle at a plant in Georgia. H&K was British owned at the start of the project, but was later bought back by a group of German investors. Engineering work was done at facilities in the United States and Germany. General Dynamics (NYSE: GD) is a defense conglomerate formed by mergers and divestitures, and as of 2005 it is the sixth largest defense contractor in the world[1]. The company has changed markedly in the post-Cold War era of defense consolidation. ...
Overview
The US Army's purpose in contracting for this prototype weapon was to provide replacement options for the venerable M16 rifle after the XM29 program ran into problems. The Army's goal was a weapon that was cheaper, lighter, and more effective than the M16 and M4 Carbine series of weapons. The XM8 was not just one weapon, but a system which could be reconfigured with appropriate parts to be any one of several variants from a short-barreled personal defense weapon to a bipod-equipped support weapon. It also included an integrated optical sight and IR laser aiming module/illuminator. M16 (more formally United States Rifle, Caliber 5. ...
The XM29 Objective Individual Combat Weapon (OICW), also referred to as the Selectable Assault Battle Rifle, is a highly advanced new assault rifle / grenade launcher system slated to replace certain M-16 assault rifles with M203 underslung grenade launcher. ...
The M4 Carbine is a family of firearms tracing its lineage back to earlier carbine versions of the M16, all based on the original AR-15 made by ArmaLite. ...
A bipod is a support device that is similar to a tripod or monopod, but with only two legs. ...
The XM8 was based on the kinetic energy module of Alliant Techsystems's XM29 OICW project, of which the weapon mechanisms were the responsibility of H&K. Following the indefinite delay of the Objective Individual Combat Weapon program, the U.S. Army requested that the contractors design stand-alone weapons from the XM29's kinetic energy and high explosive modules. The kinetic energy of an object is the extra energy which it possesses due to its motion. ...
Alliant Techsystems NYSE: ATK is a major US aerospace and defense contractor with sales of approximately USD $2. ...
The XM29 OICW (Objective Individual Combat Weapon) was the name for a series of prototypes of a new type of battle rifle that fired 20 mm HE airbursting projectiles. ...
An early XM8 mockup after the break up; became part of OICW Increment 1 A working XM25 prototype is tested in 2005; this was part of OICW Increment 2 OICW prototype; similar to the planned OICW Increment 3 Early Springfield Armory SPIW prototype (Circa 1964) Final Springfield Armory SPIW prototype...
The first 30 XM8 prototypes were delivered by November 2003 for preliminary testing. Later, at least 200 developmental prototypes were procured. Among the complaints during testing were too low a battery life for the weapon's powered sight system and some ergonomics issues. Two other key issues were reducing the weapon's weight and increasing the heat resistance of the hand guard, which would start to melt after firing too many rounds. The main testing was largely completed, and the Army pushed for funding for a large field test. However, in 2004 Congress denied $26 million funding for 7,000 rifles to do a wide scale test fielding of the XM8 in 2005. At the time the rifle still had developmental goals that were incomplete, primarily associated with the weapon's weight; the battery life had been extended, and a more heat-resistant plastic hand-guard added. The earliest product brochure lists the target weight for the carbine variant at 5.7 lb (2.6 kg) with the then current prototype at 6.2 lb (2.8 kg). The weight of the carbine prototype had since grown to 7.5 lb (3.4 kg) according to a brochure released by HK and General Dynamics in January 2005. General Dynamics (NYSE: GD) is a defense conglomerate formed by mergers and divestitures, and as of 2005 it is the sixth largest defense contractor in the world[1]. The company has changed markedly in the post-Cold War era of defense consolidation. ...
During the same period, the Army came under pressure from other arms makers to open up the XM8 to competition. The main argument was that the weapon that was being adopted was a substantially different system than for the original competition that ATK and H&K had actually won (see XM29). Other issues were that the Army has a legislated obligation to prefer U.S.-based manufacturers, and that a previous agreement with Colt Defense required the Army to involve Colt in certain small-arms programs. The XM8 program was put on hold by the Army in 2004. The exact reason why this happened is a matter of debate; some combination of the aforementioned technical issues, funding restrictions, and outside pressure being involved. Image File history File links Download high resolution version (1000x730, 152 KB)http://www. ...
Image File history File links Download high resolution version (1000x730, 152 KB)http://www. ...
Fort Benning is a United States Army base, located southwest of Columbus in Muscogee and Chattahoochee counties in Georgia and Russell County, Alabama It is part of the Columbus, Georgia Metropolitan Statistical Area. ...
The XM29 Objective Individual Combat Weapon (OICW), also referred to as the Selectable Assault Battle Rifle, is a highly advanced new assault rifle / grenade launcher system slated to replace certain M-16 assault rifles with M203 underslung grenade launcher. ...
Colt Defense was split off from Colts Manufacturing Company in 2002 in order to focus on the military, law enforcement and security markets. ...
In 2005, the Army issued a formal Request for Proposals (RFP) for the OICW Increment One family of weapons. This RFP gave manufacturers six months to develop and deliver prototype weapons with requirements very similar to the XM8 capabilities, but with the addition of a squad automatic weapon (SAW) configuration. Currently, no XM8 prototypes have been shown that actually match the capabilities of the M249 (e.g. fast barrel replacement, high sustained rate of fire, belt feed). The OICW Increment One requirement for the SAW includes fast barrel replacement and high sustained rate of fire, but leaves the ammunition feed choice up to the manufacturer. The XM29 Objective Individual Combat Weapon (OICW), also referred to as the Selectable Assault Battle Rifle, is a highly advanced new assault rifle / grenade launcher system slated to replace certain M-16 assault rifles with M203 underslung grenade launcher. ...
A squad automatic weapon (SAW) is a light or general-purpose machine gun, usually equipped with a bipod and firing a 7. ...
The M249 Squad Automatic Weapon (M249 SAW) is the United States military designation for a sub-family of the FN Minimi squad automatic weapon (from Mini-mitrailleuse French: mini-machine gun. Both are 5. ...
(for paintball markers also)Rate of fire is the frequency at which a specific weapon can fire or launch its projectiles. ...
Funding for the XM320 grenade launcher, which is a single-shot under-barrel grenade launcher similar to the M203 that was originally intended for the XM8, was approved. The launcher is actually heavier than the M203, but does offer some advantages. The XM320 was designed for use with the existing inventory of M16s and M4s and is also compatible with the XM8. It can also be used as a stand-alone weapon. XM320 refers to the U.S. Militarys designation for a new single-shot 40 mm grenade launcher to replace the M203. ...
A grenade launcher is weapon that fires or launches a grenade to longer distances than a soldier could throw by hand. ...
M203 generally refers to the United States Army designation for a single shot 40 mm grenade launcher that attaches to the M16 assault rifle or the M4 Carbine. ...
As of July 19, 2005, the OICW Increment One RFP was put on an eight-week hold, with an indication given that the program was being restructured as a joint procurement program including the Army and unnamed other branches. On October 31, 2005, the OICW Increment One RFP was canceled until further notice. is the 200th day of the year (201st in leap years) in the Gregorian calendar. ...
Year 2005 (MMV) was a common year starting on Saturday (link displays full calendar) of the Gregorian calendar. ...
In an article in Jane's Defence Weekly, April 26 2006 (Vol 43, page 30) we learn that "The US Army has again delayed the procurement of its future infantry weapons, this time for more than five years, and is working to field two interim guns in the meantime." Janes Defence Weekly (abbreviated as JDW) is a weekly magazine reporting on military and corporate affairs. ...
Technical characteristics and variants
Variants
XM8 testing; One tester is kneeling with an XM8 Carbine and a XM320 (a 40 mm grenade launcher) attached, while the other uses the XM8 sharpshooter (designated marksman) variant. For much of its life, four different models were proposed: a compact PDW (personal defense weapon) with a 9.5 inch (241 mm) barrel, a carbine with a 12.5 inch (318 mm) barrel, and sniper and automatic rifle variants with 20 inch (508 mm) barrels. In addition, accessories such as optical sights, a grenade launcher, and a bipod were integrated using a new system which allows for precision attachment (so that, for example, scopes do not have to be readjusted each time they are attached). Like the M4 and M16, the XM8 was chambered for the standard 5.56 mm NATO round and was normally equipped with a 30-round plastic box magazine. However, this magazine was not compatible with M4 and M16's metal STANAG magazine. A 100-round dual drum Beta C-Mag style magazine would have been used, as well. Image File history File links Download high resolution version (3008x2000, 3305 KB)PEO XM8 prototype testing. ...
Image File history File links Download high resolution version (3008x2000, 3305 KB)PEO XM8 prototype testing. ...
XM320 refers to the U.S. Militarys designation for a new single-shot 40 mm grenade launcher to replace the M203. ...
A grenade launcher is weapon that fires or launches a grenade to longer distances than a soldier could throw by hand. ...
A red dot sight is a type of optical aiming device for firearms. ...
A grenade launcher is weapon that fires or launches a grenade to longer distances than a soldier could throw by hand. ...
A bipod is a support device that is similar to a tripod or monopod, but with only two legs. ...
U.S. Military 5. ...
A 30-round STANAG magazine. ...
STANAG is the NATO abbreviation for Standardization Agreement, which set up processes, procedures, terms and conditions for common military or technical procedures between the member countries of the alliance. ...
The Beta C-Mag is a 100-round capacity magazine designed for assault rifles and submachine guns firing the 5. ...
Basic overview of XM8 variants. One of the XM8's unique features was its modularity. In addition to attachments mentioned above, this modularity allowed for quick repairs, barrel length changes, and even caliber changes in the field. Along with its basic components, the XM8 would have complemented the XM29, with such features as identical accessory mounts. Image File history File links Download high resolution version (1700x1821, 785 KB)Poster about XM8 Taken from https://peosoldier. ...
Image File history File links Download high resolution version (1700x1821, 785 KB)Poster about XM8 Taken from https://peosoldier. ...
The XM29 Objective Individual Combat Weapon (OICW), also referred to as the Selectable Assault Battle Rifle, is a highly advanced new assault rifle / grenade launcher system slated to replace certain M-16 assault rifles with M203 underslung grenade launcher. ...
The number and type of variants in the family varied over its lifetime, this overview with three main versions is based from a press release in the early 2000s.
- XM8 Carbine with XM320 grenade launcher
- XM8 Compact Carbine: 9 in (229 mm) barrel, PDW configuration, folding stock or buttcap.
- Automatic Rifle / Designated Marksmen: heavy 20 in (508 mm) barrel, integrated folding bipod, 4X sight, 30/100 round magazine
An XM8 compact carbine variant with buttcap attached, as being fired by a US Army weapons tester. Image File history File links Download high resolution version (3008x2000, 2825 KB)XM8 compact carbine prototype being fired. ...
Image File history File links Download high resolution version (3008x2000, 2825 KB)XM8 compact carbine prototype being fired. ...
Characteristics and Features
Materials and Weight The materials used to build the XM8 are almost entirely composites — with the notable exception of the cold hammer forged steel barrel. Preliminary tests in desert and Arctic conditions have shown XM8 to be a rugged weapon, though some complaints arose. It is reported to be capable of firing 15,000 rounds without cleaning or lubrication and up to 20,000 rounds before barrel replacement. The M16A2 needs to be cleaned often, and has a barrel life of approximately 7,000–8,000 rounds. Fibre reinforced plastic (FRP) is a composite material comprising a polymer matrix reinforced with fibres usually of glass, carbon, or aramid and is commonly used in aerospace, automotive and marine industries. ...
Much of the cost and weight savings, not all of which have actually been achieved in the current prototypes, are from the weapon's electronic sight. The sight is much more than a 1.5x red dot scope, including IR lasers and pointers as well. The baseline XM8 carbine (with its integrated sight), for example, can be compared to a M4 carbine with a host of previous-generation electronic add-ons like the AN/PEQ-2, M68 CCO, ACOG, and/or BUIS. Without the advantage of the next-generation combined electronics sight, the XM8 would be both heavier and more expensive than the firearms it is intended to replace. The XM320 grenade launcher intended to be used with the current M4/M16 firearms as well as the XM8 family, is heavier than the M203, but does include feature enhancements. The AN/PEQ-2 is a laser aiming device for use on rifles fitted with a Picatinny rail. ...
A M4A1/M203 with a M68 sight fitted The M68 Close Combat Optic, also know as the M68 reflex sight or M68 aimpoint, is a red dot gunsight that is manufactured by Aimpoint AB as the CompM2. ...
An ACOG model TA01NSN, as supplied with the SOPMOD kit The Advanced Combat Optical Gunsight (normally pronounced ACOG) is a commonly used telescopic sight for rifles, particularly tactical and assault rifles, such as the automatic M16. ...
XM320 refers to the U.S. Militarys designation for a new single-shot 40 mm grenade launcher to replace the M203. ...
PCAP and MIL-STD-1913 XM8 abandons the standard MIL-STD-1913, for attachment of weapon accessories, in favor of a new standard referred to as PCAP (Picatinny Combat Attachment Points), small oval holes on the forward grip. (A variant was designed with MIL-STD-1913 rails — XM8 R — and some early XM8 prototypes had rails.) PCAP is not backwards compatible with currently fielded attachments that use MIL-STD-1913 rails without using an adapter. The benefit of PCAP, however, is the precision of the accessory's connection with the body of the weapon; accessories utilizing MIL-STD-1913 rails often need adjustment if they are removed and reattached. Additionally, most standard accessory functionality is built-in to the XM8. Where functionality was missing, it was anticipated that accessories would be redesigned to utilize PCAP. In the new OICW Increment One competition, the Army has left the choice of attachment technology up to the manufacturer, with requirements built into the RFP as to the ability of sights to maintain their zero. M4A Modular Weapons System carbine with M1913 rails on receiver and foregrip Picatinny Rail Dimensions, Cross Section The Picatinny rail is a bracket used on some firearms in order to provide a standardized mounting platform for scopes and other accessories such as tactical lights and laser sighting modules. ...
Other
An Army soldier test fires the DMR (Designated Marksman Rifle) variant in 2004. Note the fluted barrel and double magazine. The M4 carbine barrel is 14.5 inches (368 mm) and the XM8 barrel is 12.5 inches (318 mm) but the rifles have the same overall length. Although a shorter barrel generally results in lower muzzle velocity, H&K claims octagonal rifling will offset the effect of the shorter barrel. Ballistic results to confirm this have not been released to the public. Image File history File linksMetadata Xm8005. ...
Image File history File linksMetadata Xm8005. ...
Rifling of a Canon de 75 modèle 1897 A 35 caliber Remington, with a microgroove rifled barrel with a right hand twist. ...
An electronic bullet counter is proposed for the XM8. The system, which is likely to be fielded on existing weapons as well, tracks the number of rounds fired and the date and time of each fire. The data can then be accessed wirelessly by a device like a PDA. The tracking will greatly improve the ability to keep tabs on weapon wear and tear, and make it easier to identify weapons that are in need of overhaul or new components. The battery life, according to a presentation on the system, is a few years, thanks to an ultra-low power circuit and a comparatively large battery (the tracker is intended to be located in the hand-grip). Another benefit would be to able to cut down on, or at least be aware of, unauthorized weapons use and to corroborate field reports. For example, if a squad reported engaging targets, simply by checking the counters, the exact times and rounds fired by each member could be identified. The soldiers that used too much ammo or didn't fire at all could be quickly identified.
For much of its life, the XM8 was going to be adopted essentially as described above; it was an off-shoot of the OICW program. However, as of 2005, it will face competition in the OICW Increment One program. All the effects that this will have on the specifications and variants is unclear. At the end of 2005 the OICW 1 program was also cancelled.
Other featurers include total ambidextrious controls, three different "skins", and an integrated red dot/3x optical zoom scope (which was later changed to a red dot/1x sight). However, in its "sharpshooter" (designated marksman) configuration, the mounted sight is a 3.5x magnification. A telescopic sight is a device used to give an accurate point of aim for a firearm. ...
The Designated Marksman (DM) is a military role in a U.S. infantry squad. ...
Other Selected specifications:
Caliber: 5.56x45 mm NATO The word calibre (British English) or caliber (American English) designates the interior diameter of a tube or the exterior diameter of a wire or rod. ...
A millimetre (American spelling: millimeter), symbol mm is an SI unit of length that is equal to one thousandth of a metre. ...
Action: Gas-operated, rotating bolt The gas-operated system for implementing automatic reloading of a firearm is one of five such systems, the others being recoil-operated, gatling, chain, and blowback. ...
Rotating bolt of a Sig 550 rifle. ...
Overall length: 838 mm in basic configuration, butt extended
Barrel length: 318 mm in basic configuration; also 229 mm in Compact and 508 mm in Sharpshooter and SAW versions
Rate of fire: ~ 750 rounds per minute
Magazine capacity: 30 rounds or 100-rounds double drum in Automatic Rifle/SAW role A 30-round STANAG magazine. ...
Adoption status
 A prototype XM8 carbine - lacking PCAP device on the side rails. Also has the open 'duckbill' rather than 'birdcage' style flash suppressor According to a Jane's Defense news article in 2005: Image File history File links Sideview of XM8 rifle Source: http://www. ...
Image File history File links Sideview of XM8 rifle Source: http://www. ...
Close-up of the flash suppressor on a Sig 550. ...
In budget documents released at the beginning of this year, the army set aside US$32.5 million to buy 10,400 XM8 carbines in Fiscal Year 2006. That procurement is now on hold pending the competition. The competition is Objective Individual Combat Weapon (OICW) Increment One, which is similar to the previous goals of the XM8: a family of weapons with high parts commonality that can be configured for various functions.
The text of the request for proposals from the Army reads:
Non-Developmental multi- configurable 5.56 mm modular weapon system. The system shall consist of four variants to include: Special Compact (SC), Carbine, Designated Marksman (DM), and Light Machine Gun (LMG) (or Auto Rifle). All variants need to function in both semi-automatic and automatic firing modes, with the LMG primary firing mode being full auto. The SC variant will provide Soldiers an enhanced close quarter battle capability providing effective lethality through 150 m. The Carbine is slated to be the standard issue individual combat weapon with an effective range through 500 m. The DM variant will provide accurate fire at longer ranges as well as offering an automatic rifle capability. The LMG variant will offer the role of suppressive fire through 600 m. Had this program not been cancelled, the XM8 system may have faced competition from weapons such as from the FN SCAR, Robinson Arms XCR, H&K 416, or Steyr AUG, all of which can be re-configured to various roles. The U.S military's XM8 program was cancelled in fall 2005 after being suspended earlier in the year. Independent work by H&K on the XM8 has continued. It was altered and entered as a candidate for the SCAR competition but was unsuccessful. The SOF Combat Assault Rifle[1], or SCAR, is a modular rifle made by Fabrique Nationale (FN) for the U.S. Special Operations Command (SOCOM) to satisfy the requirements of the SCAR competition. ...
The Robinson Armament XCR is a multi-caliber, gas piston weapon system developed by Robinson Armament Co. ...
The HK 416 is an assault rifle designed and manufactured in Germany by Heckler & Koch to be an improved version of the M4 carbine pattern firearm. ...
Steyr AUG is a family of firearms, first introduced in 1977 by the Austrian company Steyr Mannlicher. ...
The SOF Combat Assault Rifle[1], or SCAR, is a modular rifle made by Fabrique Nationale (FN) for the U.S. Special Operations Command (SOCOM) to satisfy the requirements of the SCAR competition. ...
Despite reports to the contrary, the XM8 is not dead. In July 2007, the US Army announced a limited competition between the M4 carbine, FN SCAR, HK416, and the previously-shelved HK XM8. Ten examples of each of the four competitors will be involved. Each weapon will fire 6,000 rounds in an "extreme dust environment." The purpose of the shootoff is for assessing future needs, not to select a replacement for the M4. [1] July 2007 is the seventh month of that year. ...
See also The XM29 Objective Individual Combat Weapon (OICW), also referred to as the Selectable Assault Battle Rifle, is a highly advanced new assault rifle / grenade launcher system slated to replace certain M-16 assault rifles with M203 underslung grenade launcher. ...
XM307 The XM307 Advanced Crew Served Weapon (ACSW) is a developmental 25mm belt-fed autocannon with smart shell capability. ...
XM312 . ...
M4 carbine with XM26 LSS The XM26 Lightweight Shotgun System (LSS) is a developmental under-barrel shotgun attachment for the M16/M4 family of U.S. service firearms. ...
The G36 (company designation, Bundeswehr designation Gewehr G36) is an assault rifle designed in the early 1990s and manufactured in Germany by Heckler & Koch. ...
The XM8 armament subsystem was a grenade launcher for a helicopter. ...
A projectile is any object sent through space by the application of a force. ...
French anti-tank round with its sabot APFSDS at point of separation of sabot. ...
XM320 refers to the U.S. Militarys designation for a new single-shot 40 mm grenade launcher to replace the M203. ...
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