TacFire MAR040 Mil-Spec Buffer Tube Black Aluminum

Description

This TacFire MAR040 Mil‑Spec buffer tube is a direct‑fit AR‑15 receiver extension machined from 6061‑T6 aircraft‑grade aluminum. It features a matte black Type III Class II hardcoat anodized finish for improved wear resistance. Machined to Mil‑Spec dimensions, the tube offers tight tolerance control for zero‑gap fitment with polymer stocks and receivers. Compatible with Mil‑Spec butt stocks, it provides a precise, durable component for rifle builds and maintenance.

Key Specifications

• The material is 6061-T6 aircraft-grade aluminum.
• The finish is Black Hardcoat Anodized (Type III Class II).
• The product is built to Mil‑Spec dimensions.
• Compatible with Mil‑Spec butt stocks.
• Designed for zero‑gap fitment tolerance control with polymer stocks and receivers.
• Intended for use on the AR‑15 platform.
• The surface treatment provides enhanced wear resistance.

Whether you’re assembling a new build or replacing a worn receiver extension, the TacFire MAR040 delivers durable construction and precise fit to support consistent function. Its hardcoat anodized finish and tight machining tolerances make it a practical choice for builders who prioritize reliable, serviceable components.