The True Precision Micro Comp is a compact 9mm pistol compensator with three slotted 90-degree ports and a tapered front crown. It threads onto 1/2x28 9mm barrels and locks in by hand without set screws. Features: Three-port design with slotted 90-degree ports Tapered front crown 1/2x28 thread, 9mm Black nitride, corrosion-resistant finish Tension-lock O-ring for hand-tight, set-screw-free indexing Fits 1/2x28 9mm barrels, including Glock-pattern barrels, and matches full and compact 9mm slide width for Glock 17, 19, and 26. Do not pair it with the subcompact Glock 43 or 43X, which use a different slide width. GLOCK is a registered trademark of GLOCK Inc. 3CR Tactical is not affiliated with, endorsed by, or sponsored by GLOCK Inc. Any reference to GLOCK products is for identification and compatibility purposes only. 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.