Dropinconvbbl Forg3745gapto40s&wwextrct

Drop-In Converts Glock 37 to .40 S&W.

Features:

- Drop-In Fit Barrel
- Compatible With Lead Bullets
- Cut Broach Rifling with Precision Final Hone

Includes:

- Billet Cut 4140 Extractor
- Magazine Follower

Specifications:

- CNC Cut 416R Stainless Steel