American Tactical Match Grade Drop-In Barrel Glock 37 .40SW

American Tactical Imports Match Grade Replacement Conversion Barrel Kit Glock 37. 45 G.A.P. Glock 37 and allows you to fire .40 S&W with a couple of simple part swaps. Comes with a match grade .40 S&W barrel .40 S&W extractor and either a .45 G.A.P. or 9mm follower. Once you have the parts in your Glock 37 swapped out you will need to replace the .45 GAP magazine with a magazine for the .40 S&W (Glock 22 magazine sold separately). Using the standard .40 S&W follower will feed the conversion kit but the slide may not lock back after the last shot. This is what the follower in the conversion kit is for you simply swap the follower in your .40 S&W magazine with the .45 GAP follower and the slide will lock back as normal (on empty magazine). Specifications for American Tactical Imports Match Grade Replacement Conversion Barrel Kit: Manufacturer: American Tactical Imports Gun Make: Glock Gun Model: Glock 37 Features: Precision Engineered CNC Cut 416 R Stainless Steel Broach Cut and Finished Honed Drop-in Fit No Gunsmithing Required 1:10 Right Hand Twist Compatible with Lead Bullets. Match Grade Accuracy Package Contents: American Tactical Imports Match Grade Replacement Conversion Barrel Kit American Tactical Imports ATIBG37CONV: Glock 37 Match Grade Replacement Conversion Barrel Kit