The name CETME is an acronym for Centro de Estudios Técnicos de Materiales Especiales, a Spanish government design and development establishment. The CETME rifle, which was intially trialed with other calibers, but eventually chambered for 7.62x51mm NATOcaliber, was designed primarily by the German engineer, Ludwig Vorgrimmler, who based his model on a late WWII German prototype assault rifle, the experimental StG-45(m). The StG-45 used a roller-delayed blowback mechanism based on roller-locking system patented by the Edward Stecke in the 1930s in Poland and used in the MG42. NATO 7. ... 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. ... This article does not cite its references or sources. ... M16A2 (US). ... // Events and trends The 1930s were described as an abrupt shift to more radical lifestyles, as countries were struggling to find a solution to the global depression. ... The Maschinengewehr 42, MG-42, or MG42 was a machine gun that was developed for and entered service with Nazi Germany in 1942, during World War II. The 7. ...
Manufactured in Spain from 1957, the CETME served as a blueprint for the German Heckler & Koch G3 series of assault rifles. The CETME features roller-delayed blowback operation, which it shares with many German weapons. The CETME rifle was manufatured in five models, the A, B, C, L and LC models. The primary difference in the three first models is the absence of bipod and less weight C model, with more wood. The L was the "light", with composite materials, and the LC was the short version of it. 1957 (MCMLVII) was a common year starting on Tuesday of the Gregorian calendar. ... The G3 is an automatic self-loading rifle manufactured by Heckler & Koch and adopted as the standard service rifle by the Bundeswehr in 1959. ... M16A2 (US). ... Roller-delayed blowback is a firearm operating principle, a refined form of blowback. ...
On one hand, they weren't enough CETMEs to equip all the soldiers (remember, Spain was then under a more-or-less official international freezing, and production was awfully slow), and, on the other, the military magazines were being filled with perfectly usable Mauser rifles that, moreover, fired a cartridge that was facing a near extinction.
As more and more military units were adopting the CETME, the Cetmeton was being banished to the auxiliary units, or as an "expendable" rifle for training uses, and, finally, it was exported as a shooting and hunting rifle.
The FR-8 has a CETME "C" barrel, designed to withstand the presures of the 7'62x51 NATO cartridge (although it's true that the CETME "A" was designed to fire the 7'62x51 CETME, with lesser power), and the locking system of the 1943 rifle (Mauser 1898) designed to withstand the even greater pressures of the 7'92 cartridge.
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