The Stern Defense 004SDBU9NIBECHOD2M 9mm NIB/Mag Phosphate Hybrid Bolt Carrier Group is built for shooters who want reliable 9mm performance in their AR15/M16 platform. Machined from 8620 AISI steel and finished in a slick nickel boron and phosphate hybrid coating, this complete bolt is designed to run smoothly in both Mil-Spec and Glock-pattern upper receivers while resisting wear from high round counts.

This 9mm bolt carrier arrives fully assembled with firing pin, springs, extractor, and proprietary center and roll pins installed, so it is ready to drop into compatible builds. It works with Colt SMG and Glock magazines, supports single-stage triggers with short resets, and is Echo trigger and JP Silent Capture Spring friendly, making it a strong choice for range use, competition, and training-focused pistol-caliber carbines. Stern Defense’s attention to detail and proven craftsmanship are evident in the precise machining and dependable function of this bolt carrier group.

Key Features:

• Manufacturer: Stern Defense
• Model: 004SDBU9NIBECHOD2M
• Caliber: 9mm Luger
• Component Type: Bolt Carrier Group
• Material: 8620 AISI Steel
• Finish: Nickel Boron / Mag Phosphate Hybrid
• Compatibility: AR15/M16 Mil-Spec and Glock-Pattern Upper Receivers
• Magazine Compatibility: Colt SMG And Glock Magazines
• Trigger Compatibility: Single-Stage Short Reset And Echo Triggers
• Assembly: Fully Assembled With Firing Pin, Extractor, Springs, And Pins