TacFire MAR043 AR-15 Buffer - Black Anodized Aluminum

The TacFire MAR043 AR-15 buffer is a mil-spec replacement component designed to keep your AR platform cycling reliably. Whether you're swapping out a worn buffer, tuning your rifle's action, or building a new upper, this black anodized aluminum buffer delivers the durability and consistency AR shooters expect. At 3 oz., it meets standard mil-spec weight, making it a straightforward drop-in solution for any mil-spec compatible AR-15 lower receiver.

Black anodized aluminum construction resists corrosion and handles the repeated impact of the bolt carrier group cycle after cycle. The simple, proven design means no surprises—just a dependable buffer that does what it's supposed to do. Whether you're running a carbine, mid-length, or rifle-length system, a properly weighted buffer is fundamental to smooth function and longevity.

TacFire focuses on no-nonsense AR components that work. This buffer fits that philosophy: solid mil-spec specs, straightforward installation, and a price that won't break the bank. Keep one as a spare, or use it as your go-to replacement when your original buffer wears out.

Key Features

• Mil-spec 3 oz. weight for standard AR-15 cycling
• Black anodized aluminum body resists corrosion
• Compatible with mil-spec AR-15 lower receivers
• Drop-in replacement—no gunsmithing required

Specifications

Frequently Asked Questions

Is this buffer compatible with my AR-15?

The TacFire MAR043 is mil-spec compatible and will work with any AR-15 lower receiver that accepts a standard mil-spec buffer. Confirm your lower is mil-spec; some commercial-spec lowers require a different buffer weight.

What's the difference between this 3 oz. buffer and heavier alternatives?

The 3 oz. mil-spec weight is the standard for most AR-15 configurations. Heavier buffers slow bolt carrier velocity and are typically used in precision or heavy-recoiling builds; lighter buffers speed up cycling. Stick with 3 oz. unless your specific build or load requires adjustment.

Do I need any tools to install this buffer?

No. This is a simple drop-in replacement. Remove your charging handle, slide out the bolt carrier group, and swap in the new buffer. Installation takes seconds.