Spikes Tactical ST5BG01 BCG .223/5.56 Black Phosphate

Description

The Spikes Tactical ST5BG01 is a complete M-16 style bolt carrier group finished inside and out in black phosphate. It is laser-engraved with the ST spider logo and includes mil-spec components installed. The bolt is HPT/MPI inspected and the assembly is intended for AR-15 platforms chambered for .223 Rem / 5.56x45mm NATO.

Key Specifications

• The bolt type is Full Auto.
• The finish is Black Phosphate.
• The material is Steel.
• The model is sold as a Bolt Carrier Group.
• The size/chambering is listed as .223 REM / 5.56 NATO.
• The cartridge designation is .223 REM / 5.56 NATO.
• The unit weight is listed as 11.60 oz.
• The bolt is marked as HPT/MPI (high pressure tested / magnetic particle inspected).
• Included components are mil-spec extractor, gas key, firing pin, cam pin and retaining pin.
• The color is Black.

Built to mil-spec form and finished for durability, the ST5BG01 provides factory-level components and inspection for builders and maintainers who need a service-style bolt carrier group that integrates directly into AR-15 platforms. Its complete parts set and phosphate finish make it a straightforward choice for assembling or maintaining a rifle that uses .223 Rem / 5.56x45mm NATO ammunition.