The CMMG AR-15 bolt assembly in .223 Remington/5.56x45mm is a critical component for any shooter who builds, maintains, or upgrades their own rifle. Whether you're assembling an upper receiver from scratch, replacing a worn bolt, or keeping a spare on hand for the range or field, a quality bolt assembly matters—it's the heart of your rifle's reliability and longevity. CMMG's reputation for precision manufacturing and attention to detail carries through to this bolt, giving you a component you can depend on through thousands of rounds.

A bolt assembly does the heavy lifting: it chambers your round, locks into battery, and handles the cycling that makes your rifle function. That's why choosing a bolt from a maker known for durability and consistent quality isn't just smart—it's essential. CMMG parts are designed to withstand repeated use without premature wear, and the matte finish resists corrosion and glint without adding complexity or weight to your build.

If you're a serious AR platform shooter—whether you're running a competition rifle, a reliable hunting setup, or a general-purpose tactical carbine—keeping a spare bolt assembly in your parts kit is just good practice. This assembly fits standard AR-15 receivers chambered in .223 Remington or 5.56x45mm, making it a versatile addition to any shooter's bench or range bag.

Key Features

• Precision-manufactured for consistent performance and tight tolerances
• Built for long-term reliability and durability through extended use
• Matte finish resists corrosion and provides a low-profile appearance
• Compatible with .223 Remington and 5.56x45mm AR-15 platforms

Specifications

Product	AR-15 Bolt Assembly
Brand	CMMG
Caliber	.223 Remington / 5.56x45mm
Finish	Matte

Frequently Asked Questions

Will this bolt work in my AR-15 upper receiver?

This CMMG bolt assembly is designed for standard AR-15 platforms chambered in .223 Remington or 5.56x45mm. It will function in any compatible upper receiver built to these specifications.

What's included?

You receive the complete bolt assembly. The specific components included in the assembly are not detailed in the available product information.

Is this suitable as a spare or replacement part?

Yes. Whether you're building a new rifle, replacing a worn component, or keeping a backup bolt for range day or field use, this assembly is built to CMMG's standards for reliability and durability.

Why choose CMMG for a bolt assembly?

CMMG is known for precision manufacturing and attention to build quality. A bolt assembly is a high-use component that deserves a maker committed to consistent performance and long-term reliability.