The TacFire Firing Pin (TacFire part no. MAR120) is a hard chrome steel firing pin sized for 5.56x45mm NATO chambered AR-15/M4 platforms. TacFire machines it to strike the primer reliably on every cycle, whether it’s finishing out a new build or replacing a worn or damaged factory pin. The hard chrome finish adds corrosion resistance and a smooth surface that helps the pin move freely inside the bolt carrier. It’s an inexpensive part that’s easy to keep as a spare, since a build isn’t complete without one.

Key Specifications

• Machined from hard chrome steel for corrosion resistance and smooth travel.
• Sized for 5.56x45mm NATO chambered rifles.
• Fits all AR-15/M4 platforms.
• Functions as the firing pin, striking the primer to fire each round.
• Works as a new-build component or direct replacement for a worn factory pin.

Frequently Asked Questions

Will this fit my AR-15 or M4? Yes, it fits all AR-15/M4 platforms chambered in 5.56x45mm NATO.

What does the hard chrome finish do? It adds corrosion resistance and a smooth, low-friction surface that helps the pin cycle freely.

Buy the TacFire Firing Pin

A worn or damaged firing pin will keep a build from going bang, and this TacFire pin is a cheap, direct-fit way to finish a build or fix that problem. Order from our Lubbock, Texas gun shop and it ships fast to your door, along with more gun accessories and parts.