The TacFire MAR050S Mil-Spec Black AR-15 Buffer Tube Kit provides a complete, no-nonsense upgrade for your rifle’s rear end. Featuring a mil-spec diameter buffer tube and a matching black adjustable stock, this kit is designed to deliver reliable performance and a consistent cheek weld while maintaining a clean, streamlined profile.

This accessory package is ideal for building out a new AR-15 lower or refreshing a well-used rifle with modern, dependable components. The included buffer, spring, end plate, and castle nut work together to support smooth cycling and stable recoil management, making it well suited for range use, training, and general-purpose shooting. Backed by TacFire’s reputation for practical, value-focused parts, the MAR050S kit offers a straightforward solution for shooters who want proven mil-spec compatibility.

Key Features:

• Manufacturer: TacFire
• Model: MAR050S Mil-Spec Black AR-15 Buffer Tube Kit
• Condition: New
• Unique Features: Complete kit with stock, mil-spec buffer tube, buffer, spring, end plate, and castle nut