Drop-in match-grade barrel and micro compensator combo for the Glock 19 Gen 4. The Radian RAMJET barrel and AFTERBURNER comp work as a system - installed on a G19 Gen 4, the package brings overall slide length up to a G17 footprint, so you keep G17 holster compatibility while gaining recoil reduction. The AFTERBURNER measures only .47" - shorter than most micro comps on the market - yet the INTRA-LOK tapered system locks the comp into a V-groove for repeatable timing. Combined recoil reduction with 115gr 9mm runs up to 44%. Bronze PVD finish on both pieces. Specs: Caliber: 9mm Luger Fits: Glock 19 Gen 4 only Barrel: Fluted, gas sealing chamber, loaded chamber indicator Comp length: .47" (G19 + comp matches G17 OAL) Finish: Bronze PVD Mount: INTRA-LOK tapered V-groove (no thread timing required) Legal for sale in all 50 states Gen 4 only - will not fit Gen 3 or Gen 5 G19 frames. Confirm your slide is cut to factory G19 spec. Holster check before carry: G19 Gen 4 + RAMJET/AFTERBURNER fits G17 holsters, not G19 holsters. DISCLAIMER: GLOCK is a federally registered trademark of GLOCK, Inc. and is one of many trademarks owned by GLOCK, Inc. or GLOCK Ges.m.b.H. Neither 3CR Tactical nor this site are affiliated with, or endorsed by, GLOCK, Inc. or GLOCK Ges.m.b.H. The use of "GLOCK" on this page is merely to advertise the sale of aftermarket GLOCK pistol components. For genuine GLOCK, Inc. products, visit www.glock.com.