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 restrictionsFull auto ratedDiameter:1.5"Overall Length:Length Added6.25"VS. A2 Compensator, 4.8"Weight:12.5 ouncesMaterials:High Strength, High Temp, Corrosion Resistant AlloysAttachment:1/2x28 TPI (industry standard for 5.56mm barrels)Finish:CerakoteDB Attenuation:31DB Tig Fusion welded Light Weight Design 1/2x28 TPI Threads 3/4" Wrench Flat mounting geometry for easy installation Pre-Drilled for pinning and welding for a 1 stamp gun Shim set included for Pin and Weld Applications Full Auto Rated High strength, high temp, corrosion resistant 17-4ph Stainless Steel Silencer Pouch Included Cerakote Finish