Home / Series / Forgotten Weapons / Aired Order / Season 2016 / Episode 160

GX vs GY: What Are the Differences in Pedersen's Garands?

http://www.patreon.com/ForgottenWeapons In a last hopeful attempt to get a rifle adopted and produced for the US military, John Pedersen designed his own copy of the M1 Garand rifle in the late 1930s (approximately 1939). His toggle-locked rifles had been irreversibly rejected, and the Garand rifle fully adopted by 1936. Pedersen's exact reasons for making a copy of it are not recorded anywhere I can find, but he did make a number of small changes to the design. Two series of Pedersen Garand rifles were made, first the GX and second the GY. Only 10-12 of each were ever made, so they are extraordinarily rare today. They all show some detail differences form the M1 in stock design, sight design, etc. However, a persistent question had long been, what differentiated the GX from the GY? When I had the opportunity to examine one of each type side by side, I knew I would have a chance to determine that answer. The meaningful differences are twofold: clips and gas system. The later GY rifle uses a standard M1 Garand clip, while the earlier GX rifle uses a distinct Pedersen-designed clip. Whether Pedersen was unable to obtain Garand clips to design around or if he thought he could make a better clip is unknown, but by the time the rifles were actually tested in 1943 it must have been clear that if they did not use a standard clip, logistics would immediately rule out their potential adoption. The gas system difference mirrors a change that the Garand underwent as well. The early GX rifle was originally made as a gas trap style of action, in which the rifled barrel ends just shy of the muzzle, leaving an unrifled and minutely larger bore with a large hole to capture gas pressure just before the bullet exits. This was believed to prevent problems with wear and accuracy caused by drilling a gas port in the barrel itself (the German military also believed this to be a problem, as one can see from their Gewehr 41 development requirements). However, this system instea

English
  • Originally Aired August 12, 2016
  • Created September 28, 2021 by
    TVDB-Editor123
  • Modified September 28, 2021 by
    TVDB-Editor123