Remington Model 121 Fieldmaster Remington Model 121 Type: Rifle: Place of. Remington's information page on the Model 572 BDL Fieldmaster. These abbreviations served as a suffix to the model number. It is noted for its similarity to the shotgun in design. Remington model 572 Type pump-action rifle Place of origin United States Production history Designed 1954 Manufacturer Produced 1954 Specifications Weight 5 lbs length 21 in (530 mm) Crew rifling twist rate = 1 in 16, Feed system, 15 to 22 rounds, depending on cartridge The Remington Model 572 is a pump-action rifle manufactured by the.