text: It was first designed a few years before the M1 but kept a secret from Germany It finally went into production in 1948 and issued to militaries in 1949They came in several calibers 7.92x57(8mm Mauser) 7.62x54,7.5Swiss, 30-06 and 7.62x51This one is from the Belgium contract and was Columbian Army issue chambered in 30-06 the rarest caliber and hardest to find This is the FN49