The GP (General Purpose) suppressors were designed to provide the customer with a lightweight durable and affordable suppressor for general use. Constructed entirely of 17-4 stainless steel and utilizing our patented baffle technology GP suppressors are both durable and high performance. Front and rear 3/4 ( or 19mm) wrench flats provide options for traditional use or forend rail integrated applications. GP suppressors come pre-drilled with a .125 hole for pinning to create one stamp guns. The GP5 can be pinned on a barrel as short as 10.5 The GP5 is a .22 caliber aperture silencer rated for use up to and including 220 swift. The GP series provides quality engineering construction versatility and affordability in one. Every component in the GP5 is manufactured from high strength high temperature corrosion resistant alloys. – Barrel Ratings: No restrictions Full auto rated – Diameter: 1.5 – Overall Length: 6.25 – Length Added: VS. A2 Compensator 4.8 – Weight: 12.5 ounces – Materials: High Strength High Temp Corrosion Resistant Alloys – Attachment: 1/2×28 TPI (industry standard for 5.56mm barrels) – Finish: Cerakote – DB Attenuation: 31DB