CMC Triggers Corp Barrel 9MM for Gen3 & Gen4 Glock 19 Hexagonal Boron Nitride Bore & Chamber 416R Steel Features: CMC Triggers is excited about it s new line of Match Grade Drop In replacement barrels for the GLOCK Gen 3-4 platform firearms. This precision machined barrel is the ultimate upgrade for anyone searching for superior accuracy reliability and durability. This barrel is precision machined from certified DFARS compliant pre-hardened 416R premium grade stainless steel. The barrel is then bead blasted to create a satin finish prior to the plating process. An ultra low friction Hexagonal Boron Nitride Bore and Chamber is applied before the final exterior coating process. Best of all this barrel is manufactured right here in the great state of Texas. CMC Triggers Corp Barrel 9MM for Gen3 & Gen4 Glock 19 Hexagonal Boron Nitride Bore & Chamber 416R Steel Specifications: CMC Triggers GLOCK Drop In Replacement Barrel 75522 9mm Luger 1:10 Right Hand Twist Rate 6 Groove Cut Rifled SAAMI Match Grade Chamber Fluted Non-Threaded Precision cut/finished to a maximum roughness Average of 16 Pre-Hardened 416R Stainless Steel 38-42 Rockwell C Before Plating Bead Blasted Stain Finish Prior to Plating Ultra Low Friction hBN (Hexagonal Boron Nitride Bore/Chamber) 100% Manufactured in Texas Black DLC Finish Fits: GLOCK 19 Gen 3-4 Models Only 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.