Product Description
The CMMG 55BA419 complete bolt carrier group is a Mil-Spec M16-style BCG designed for reliable function in 5.56x45mm NATO/.223 Remington platforms. Built with a 9310 steel bolt, 8620 steel carrier, and a 4140 steel extractor, this assembly features a durable phosphate finish and a chrome-lined carrier for long-lasting performance and easier maintenance. It’s an ideal replacement or upgrade bolt carrier group for AR-15/M16 upper assemblies.
Product Highlights
- Complete Mil-Spec M16 bolt carrier group for dependable cycling and consistent reliability
- 9310 steel bolt and 8620 steel carrier for strength and durability under high round counts
- Chrome-lined carrier helps resist wear and simplifies cleaning
- Phosphate finish in black for classic Mil-Spec corrosion resistance
- Compatible with M16/AR-15 pattern rifles chambered in 5.56 NATO/.223 (and commonly used with 300 BLK setups that use standard 5.56 bolts)
Specs
- Brand: CMMG
- Manufacturer Part Number: 55BA419
- UPC: 852005002431
- Caliber: 5.56x45mm NATO / .223 Remington
- Platform/Model Compatibility: M16 / AR-15 pattern
- Bolt Material: 9310 steel
- Carrier Material: 8620 steel (chrome-lined)
- Extractor Material: 4140 steel
- Finish: Phosphate (black)
- Weight: 0.8 lb
- Country of Manufacture: United States
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