Phase 5 BCG M16/M4 Bolt Carrier Group – Black Phosphate

Description

Designed for M16/M4 platforms, the Phase 5 bolt carrier group is built to mil-spec dimensions and intended for reliable cycling in service-style AR-15 variants. The carrier features a heat-treated, chrome-lined inner and a black phosphate exterior finish. Constructed with stainless steel components, the complete group ships assembled and includes key small parts for immediate installation. Bolts are HPT/MPI tested for durability and material integrity.

Key Specifications

• The product type is Bolt Carrier Group.
• The model is listed as Bolt Carrier Group.
• The material is Stainless Steel.
• The finish is Black Phosphate.
• The overall dimension is 7.5 inches.
• The subcategory is Bolts & Bolt Carrier Groups.
• The color is Black.
• The carrier includes cam pin, firing pin, gas key, and bolt.
• The inner surface is heat treated and chrome lined.
• All bolts are HPT/MPI tested.

Robust and straightforward, this Phase 5 bolt carrier group is a practical choice for shooters seeking a mil-spec replacement or upgrade component for M16/M4-pattern rifles. With corrosion-resistant finishes, stainless construction, and factory testing on the bolts, it delivers the core durability and fitment expected for range, duty, or maintenance use.