Stern Defense 004-SD 9mm AR Bolt for Glock Magazines
Stern Defense 9mm bolt for AR-15 uppers chambered in 9mm. Made from 8620 steel with Mag-Phosphate finish. Works with Glock and Colt SMG magazines. Fully assembled and ready to install.
Stern Defense 9mm AR Bolt
The Stern Defense 004-SD represents a thoughtful approach to 9mm AR platform shooting. Built from 8620 AISI steel and finished with a durable Mag-Phosphate coating, this bolt delivers the reliability expected in modern sporting rifles.
Key Features
- Magazine Compatibility: Functions reliably with Glock-pattern and Colt SMG magazines, giving you flexibility in ammunition feeding
- Upper Receiver Compatibility: Fits both Mil-Spec and Glock-pattern upper receivers
- Charging Handle: Fully compatible with standard AR-15/M16 charging handles for seamless integration
- Complete Assembly: Arrives fully assembled with all sub-components installed—firing pin, firing pin spring, retaining pin, extractor, and extractor spring
- Precision Engineering: Incorporates proprietary center and roll pins for enhanced durability
- Trigger Optimization: The refined bolt design works particularly well with single-stage triggers featuring short resets
Why This Matters
A quality bolt is the heart of any reliable firearm. This Stern Defense bolt combines proven materials with thoughtful design to ensure consistent performance whether you're at the range or in competition. The complete assembly means you're ready to build or upgrade without additional gunsmithing.
