
Available to order
TACFIRE SS-RK556-LPK 556 RFL BUILD KIT
$365.99
Available to order — ships directly to you, or pick up in store when it arrives
UPC 817272015287MPN AC1346

| Material | Stainless Steel |
|---|---|
| Thread Pattern | .578 x 28 XL |
The pistons were designed to be easily changed for different host firearms or calibers. Pistons are built with 17-4 stainless steel, then heat-treated for maximum durability. The piston is part of the Nielson device that moves and allows semi-automatic cycling for unlocking pistol barrels. Throw a Fixed Barrel Spacer on for fixed barrel applications. SilencerCo pistons have female threading that attaches to the SilencerCo threaded barrels.
Product description as provided for this item, not written by the store.
Specifications for SILENCERCO AC1346 PISTON .578X28 XL