Lantac 01GBG19THBRN: LanTac 9INE Professional upgrade drop in barrel is match grade and precision machined from 416rd stainless steel. It also has 6 grooves, is cut rifled, and has a 1:10 twist rate. The barrel is also bead blasted to create a satin finish prior to plating. This model fits a Glock 19, is fluted/threaded with 1/2-28 TPI threads, and has a bronze finish.
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.