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Circa 1954, Sweden was starting to look for a new self-loading rifle to adopt for its infantry. The 6.5x55mm cartridge was a good round, but the idea of having ammunition compatibility with its neighbors was appealing, and NATO was standardizing on the new 7.62x51mm round. This rifle is an experimental conversion of a Ljungman to the NATO cartridge, which included replacing the original simple gas impingement system with a short-stroke piston. It’s unclear why that change was required given the successful Egyptian use of 8x57mm Mauser in the Ljungman system, but possibly it was needed in order to keep the gas block in the same place and reduce the cost of converting existing rifles should the system be adopted.
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At Forgotten Weapons I think the most interesting guns out there are the most obscure ones. I try to search out experimental and prototype weapons and show you how they work, in addition to more conventional guns that you may not have heard of before. You’re much more likely to find a video on the Cei Rigotti or Webley-Fosbery here than an AR or Glock. So, do you want to learn about something new today? Then stick around!