True Precision, Inc. is located just outside Atlanta, Georgia, and was formed so that individuals will have access to high quality, US made parts and components for a wide array of firearms. True Precision barrels, slides, and parts are designed for personal defense first. All parts are engineered, machined, and made from the ground up here in the USA by Americans and in partnership with only American companies. Features : Designed specifically for True Precision barrels, but ready for most 9mm and .380 barrels with 1/2x28 Threads Tension lock o-ring for hand-tight installation to prevent back off Made from USA-sourced solid 416R Stainless Steel bar stock Designed, assembled, and machined in the USA The multi-port design includes three slotted 90-degree ports with a tapered front crown ,The overall length is .787 STATE RESTRICTION NOTICE This product may be regulated as an "assault weapon" feature or component (e.g., threaded barrel, muzzle device/compensator, or assembled upper) and may be restricted or prohibited in CA, CT, DC, HI, IL, MA, MD, NJ, NY, RI, VA, WA, and select municipalities. It is the buyer's responsibility to verify local, state, and federal laws before purchase. Orders that cannot ship to a restricted address will be canceled and refunded.