Look no further.
IN THIS KIT:
- SD 6 Inch 40SW barrel, threaded .578-28, 1 in 16 twist.
- SD BU40 40SW bolt
Stern .40S&W barrels are ideal for gun lovers who want to build their own custom dedicated .40S&W AR15 upper group. Machined to tight tolerances with quality as a top priority, you can't go wrong with the SD .40 cal barrel.
Note: All SD Barrels come with the locating pin installed.
- Barrel length is measured in overall length.
- Caliber: 40S&W.
- Length: 6 Inches.
- Made in the U.S.A.
- Threaded .578-28.
- 1:16 TWIST.
- 4150 Chrome-molly steel.
- Melonite coating.
Made with 8620 AISI steel and boasting a Melonite finish, the Stern bolt fits into Mil-Spec and Glock-pattern upper receivers. It functions with Colt SMG, Glock magazines and it's fully compatible with standard AR15/M16 charging handles. Comes fully assembled with all sub-components installed, including firing pin/spring/retaining pin, extractor, and extractor spring. Also included in bolt assembly is a propriety center and roll pins.
- Made in U.S.A.
- Constructed from 8620 AISI steel.
- Custom 4140 billet extractor providing superior ejection.
- Glock cut.
- Coating: Melonite
- Weight: 15.5 OZ.
Convert your standard mil spec AR 15, M4, M16 lower assembly to use 9mm and .40 S&W Glock Magazines! The Mag-AD series adapters install in seconds. Boasting a last round hold open feature making them a breakthrough product and a must-have for law enforcement and civilian gun enthusiasts alike.
The Stern Mag-AD9 series adapters are made of aircraft grade aluminum, lightweight with ergonomic design.
⦁ Made in the U.S.A.
⦁ Constructed from 6061 T6 aircraft grade aluminum.
⦁ 4140 NiB coated feed ramp.
⦁ Hard coat anodized type 3.
⦁ Sturdy Construction.
⦁ Ergonomic mag release.
⦁ Works with all generations of Glock magazines.
⦁ Works with any mil spec ar15 lower receiver.
⦁ All gun components besides the Bolt and Barrel remain stock