RUGGED SUPPRESSOR OP004 Suppressor Piston M13.5x1 LH Copper 17-4 Stainless SteelRugged Suppressors piston uses a non slotted design creating a full circumference gas seal. This drastically lowers gas blowback for a more enjoyable shooting experience. Machined from 17 4 Stainless Steel and heat treated this piston is built to last. *When using a piston on a fixed barrel platform such as a carbine or subgun the spring must be replaced with a Fixed barrel spacer.
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