Shop › SCO PISTON M16X1LH SCO PISTON M16X1LH $75.65 SilencerCo Piston, M16 x 1 LH, Fits Osprey/Octane AC28 Quantity: Add To Cart Added! SilencerCo Piston, M16 x 1 LH, Fits Osprey/Octane AC28