Compatible with our ELIMINATOR 45 as well as other 'Alpha' 1.125-28 threaded pistol suppressors, this Piston Spring will work in conjunction with common pistol pistons to form a booster assembly, also known as a Nielsen device.
PISTON SPRING ONLY. PISTON IS NOT INCLUDED.
When used with the ELIMINATOR 45 suppressor, this Piston Spring allows a semi-automatic tilting barrel pistol to cycle properly by temporarily relieving the extra weight of the suppressor when each round is fired.