The TacFire AR-15 Heavy Buffer (TacFire part no. MAR043) is a 3 oz replacement buffer built to restore your AR-15’s buffer weight to Mil-Spec. Whether your factory buffer is worn out or you’re building a rifle that needs Mil-Spec-correct reciprocating mass, this buffer slides into a standard AR-15 buffer tube and helps the bolt carrier group cycle the way it was designed to. Getting buffer weight right is one of the simplest ways to fix erratic cycling, short-stroking, or excess bolt bounce. It’s a straightforward, inexpensive fix for a common AR-15 reliability issue.

Key Specifications

• 3 oz buffer weight matches Mil-Spec AR-15 buffer weight for correct reciprocating mass.
• Mil-Spec compatibility means it drops into a standard AR-15 buffer tube without modification.
• Restores proper cycling by replacing a worn, damaged, or incorrect-weight buffer that’s causing erratic function.

Frequently Asked Questions

Will this fit my AR-15? Yes, it’s built to Mil-Spec dimensions and weight for standard AR-15 buffer tubes.

Why does buffer weight matter? The wrong buffer weight can cause short-stroking, excess bolt bounce, or unreliable cycling; restoring the correct 3 oz weight resolves most of these issues.

Buy the TacFire AR-15 Heavy Buffer

Order the TacFire AR-15 Heavy Buffer from our Lubbock, Texas gun shop for fast shipping. It’s a simple, affordable fix for AR-15 cycling issues, and a handy addition to our rifle stocks and buffer parts selection.