A variety of piston rifles.
FN SCAR 15p .300 FN SCAR 16 5.56 Bushmaster ACR 5.56 Arsenal SAM-5 5.56 Robinson Arms XCR .308 Beretta ARX 5.56 Steyr AUG 5.56
FN SCAR 15p .300 FN SCAR 16 5.56 Bushmaster ACR 5.56 Arsenal SAM-5 5.56 Robinson Arms XCR .308 Beretta ARX 5.56 Steyr AUG 5.56