Stern Defense .45 ACP Bolt for Glock-Pattern AR Uppers

Stern Defense .45 ACP Bolt for Glock-Pattern Uppers

The Stern Defense .45 ACP bolt is engineered for shooters who want to convert their AR-pattern rifles to the potent .45 ACP cartridge using Glock-pattern upper receivers. This is a complete, ready-to-install bolt assembly that takes the guesswork out of building or converting your rifle.

Construction and Materials

8620 AISI Steel with Mag-Phosphate Finish — The bolt is machined from premium 8620 steel and finished with a Mag-Phosphate coating. This combination provides excellent durability and corrosion resistance, ensuring reliable performance in the field or at the range.

Compatibility

This bolt is designed to work seamlessly with:

• Glock-pattern upper receivers
• Mil-Spec upper receivers
• Colt SMG magazines
• Glock magazines
• Standard AR15/M16 charging handles

Complete Assembly

The bolt arrives fully assembled with all critical components installed and ready to function:

• Firing pin and firing pin spring
• Firing pin retaining pin
• Extractor and extractor spring
• Proprietary center pin and roll pins

Trigger Performance

The bolt incorporates a modern design optimized for single-stage triggers with short resets, delivering crisp, predictable trigger breaks without excessive take-up.

Why Choose This Bolt

If you're building a .45 ACP AR or converting an existing rifle, this bolt eliminates the need to source and assemble individual components. It's a professional-grade solution that respects both your time and your budget.