The TacFire AR-15 9mm Heavy Buffer weighing 5.5 oz (TacFire part no. MAR044-5.5) is built for pistol caliber carbines that need a longer dwell time than a standard rifle buffer provides. TacFire machines this buffer as a solid weight rather than the stacked, moving-weight design used in many carbine buffers, eliminating the internal rattle and noise those designs are known for. That added mass slows the bolt carrier’s rearward travel just enough to improve reliability and reduce felt recoil in a 9mm build. It drops into a standard AR-15 buffer tube, making it a straightforward upgrade for anyone converting or tuning a pistol caliber carbine.

Key Specifications

• The buffer weighs 5.5 oz, adding mass suited to pistol caliber carbine cycling.
• The solid weight construction eliminates the internal rattle common to moving-weight buffers.
• The added weight provides a longer dwell time for reliable 9mm carbine cycling.
• It is built to fit a standard AR-15 buffer tube.
• The buffer is designed specifically for pistol caliber carbine builds.

Frequently Asked Questions

What is this buffer designed for? It is built for pistol caliber carbines, particularly 9mm builds that need a longer dwell time than a standard rifle buffer.

Does it fit a standard buffer tube? Yes, it is sized to drop into a standard AR-15 buffer tube.

Why choose a solid buffer over a moving-weight design? The solid weight eliminates the internal rattle and noise associated with buffers that use moving weights.

Buy the TacFire AR-15 9mm Heavy Buffer

A 9mm carbine that short-strokes or rattles usually just needs the right buffer weight, and this heavy buffer is built to solve exactly that. It is part of our AR buffer system selection. Order from our Lubbock, Texas gun shop for fast, insured shipping right to your door.