Thread: .578x28 - The Osprey and Octane family of suppressors have pistons that are easily changed for different host weapons or subcalibers. Pistons are constructed from 17-4 stainless steel and then heat treated for maximum durability. The piston is part of the Nielsen device that moves and allows semi-automatic cycling but it also contains the female threads that attach to the muzzle of the host pistol or sub-gun. These pistons are easily interchangeable for compatibility with all relevant ho
Thread: .578x28 - The Osprey and Octane family of suppressors have pistons that are easily changed for different host weapons or subcalibers. Pistons are constructed from 17-4 stainless steel and then heat treated for maximum durability. The piston is part of the Nielsen device that moves and allows semi-automatic cycling but it also contains the female threads that attach to the muzzle of the host pistol or sub-gun. These pistons are easily interchangeable for compatibility with all relevant ho
$74.12