The Radian Ramjet Barrel with Afterburner Intra-Lok Compensator reduces recoil up to 44% when using 115g ammunition. At only .47" long, the Afterburner offers unprecedented performance in a micro compensator and is more effective than the majority of full-size compensators on the market.The INTRA-LOK mounting system uses the taper lock principle: a tapered locking pin interfaces with an angled V-groove on the underside of the barrel. This perfectly times the compensator as it locks down onto the V-shaped profile on the muzzle end of the barrel. Angled front faces on the Afterburner aid in holstering.The Radian Ramjet is a match-grade pistol barrel that delivers an accurate and reliable weapon system. The fluted barrel features a gas sealing chamber as well as a loaded chamber indicator. DISCLAIMER:This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.