American Tactical DropIn Barrel Glock 37 45 GAP to 40 S W Extractor

The American Tactical Drop-In Conversion Barrel Kit For Glock 37 from American Tactical Inc. converts Glock 37 models chambered in .45 GAP into shooting .40 S&W with precision-engineered CNC cut 416 R stainless steel barrels that deliver match-grade accuracy from a drop-in fit, requiring no gunsmithing. This kit features a broach-cut and finished honed barrel for a seamless, reliable upgrade, a 1:10" right-hand twist rate optimized for lead bullets, and a stainless steel barrel finish that complements the pistol's steel frame. Designed for ease of use, it includes the barrel, magazine follower, and extractor to ensure a complete, ready-to-use conversion that supports reliable cycling and precision performance. Made in the USA, this conversion maintains the original handgun's balance and handling characteristics while expanding its caliber versatility, enabling shooters to experience the ballistic and practical advantages of transitioning from .45 GAP to .40 S&W without sacrificing accuracy or dependability. Ideal for shooters seeking enhanced versatility in a single platform, this kit leverages American Tactical's quality manufacturing to deliver a durable, drop-in solution that maintains consistent performance across varied field and range conditions.