Drop-in 9mm match barrel for the Glock 17, Gen 1 through Gen 4. Faxon's variable-depth "flame" fluting pulls heat off the barrel during sustained strings - a real factor in action-pistol competition where the gun runs hot. Hard black nitride finish handles holster wear and powder fouling round after round. Machined from triple stress-relieved 416R stainless steel with a 1:10 conventional twist that runs jacketed, plated, heavy subsonic, and cast-lead practice loads without restriction. The 11-degree target crown protects the rifling at the muzzle and keeps groups consistent through the back half of a long string. Specs Fits Glock 17, Gen 1 through Gen 4 Caliber: 9mm Luger Material: 416R stainless steel, triple stress-relieved Finish: Black nitride Rifling: 1:10 conventional twist Crown: 11deg target Muzzle: non-threaded, flush fit Made by Faxon Firearms in the USA Better-than-factory tolerances give a tighter, more consistent lockup with the factory slide - no gunsmith fitting needed. Run 100 rounds of standard 115gr or 124gr FMJ to seat the barrel before competition use or heavy practice. Confirm your pistol is a Gen 1, 2, 3, or 4 Glock 17 - the Gen 5 G17 uses the Marksman barrel pattern and is not compatible. DISCLAIMER: "GLOCK" is a federally registered trademark of GLOCK, Inc. and is one of many trademarks owned by GLOCK, Inc. and GLOCK Ges.m.b.H. Neither 3CR Tactical nor this site are affiliated in any manner with, or otherwise endorsed by, GLOCK, Inc. or GLOCK Ges.m.b.H. The use of "GLOCK" on this page is merely to advertise the sale of GLOCK pistols, parts, or components. For additional genuine GLOCK, Inc. and GLOCK Ges.m.b.H products and parts visit www.glock.com.