BCM MK2 Receiver Extension – 7075T6 Mil‑Spec Buffer Tube

Description

The BCM MK2 Receiver Extension is a Mil‑Spec receiver extension designed for AR‑15, M16 and M4 platforms. It is machined from 7075‑T6 aluminum and manufactured to Mil‑Spec dimensions and specifications for consistent fit and function. Mil‑Spec receiver extensions have a slightly smaller dimension where the stock interfaces, which affects stock fit and compatibility. This receiver extension requires a rifle action spring and the specific BCM MK2 buffer; standard carbine or non‑MK2 rifle buffers are not compatible.

Key Specifications

• The receiver extension is machined from 7075‑T6 aluminum for strength and durability.
• The finish is a matte black coating.
• Designed to Mil‑Spec dimensions and specifications for consistent installation.
• Compatible with AR‑15, M16 and M4 styled platforms.
• The product functions as a buffer tube / receiver extension for stocks and buffers.
• The model designation is MK2 Receiver Extension.
• Requires a rifle action spring for correct operation.
• Requires the specific BCM MK2 buffer; standard carbine or non‑MK2 rifle buffers are not compatible.
• The style/fit is Mil‑Spec to match common AR stock interfaces.

Built for builders and armorers who prioritize precise fit and long‑term reliability, the BCM MK2 Receiver Extension delivers Mil‑Spec geometry and aircraft‑grade material where it matters. Its 7075‑T6 construction and attention to spec provide a dependable foundation for a durable stock installation and consistent function with the correct BCM MK2 buffer and rifle action spring.