TacFire MAR120 Hard Chrome Steel Firing Pin for AR15/M16 - 5.56x45mm NATO
$5.30
- Finish-Color:
- Chrome
- Model:
- Firing Pin
- Material:
- 4140 Steel
The TacFire MAR120 hard chrome steel firing pin for AR15/M16 rifles is a straightforward replacement part built for reliability in 5.56x45mm NATO firearms. Whether you're maintaining an AR you've had for years, rebuilding a lower receiver, or need a spare firing pin on hand, this component delivers the durability you'd expect from a hard chrome finish without unnecessary frills or inflated claims. It's the kind of part that does its job quietly—no drama, no excuses.
Hard chrome plating adds wear resistance and corrosion protection compared to bare steel, which matters if your rifle sees regular use or varied conditions. The TacFire MAR120 is straightforward—no exotic coatings or marketing angles, just a proven surface treatment that keeps the pin functioning smoothly through thousands of rounds. Replacement firing pins are one of the few truly wear-prone components in an AR-15, so keeping a spare makes sense if you run your rifle hard.
This pin is spec'd for 5.56x45mm NATO and compatible with both AR-15 and M16 platform rifles. Installation is simple if you've worked on a bolt carrier group before; if you haven't, a gunsmith can handle it in minutes. Before ordering, confirm your current firing pin dimensions match this part—firing pins vary by rifle design, and a mismatch will create problems.
Key Features
- Hard chrome steel construction for wear and corrosion resistance
- Designed for AR-15 and M16 platform rifles
- Engineered for 5.56x45mm NATO ammunition
- Straightforward replacement part—no guesswork
Specifications
| Brand | TacFire |
| Model | MAR120 |
| Cartridge | 5.56x45mm NATO |
| Rifle Compatibility | AR-15 / M16 |
| Material | Hard Chrome Steel |
| Type | Firing Pin |
Frequently Asked Questions
Will this firing pin fit my AR-15?
The TacFire MAR120 is designed for AR-15 and M16 platform rifles chambered in 5.56x45mm NATO. Firing pins vary by rifle design and caliber, so verify your current pin's dimensions before ordering to ensure compatibility with your specific rifle.
What's the advantage of hard chrome plating on a firing pin?
Hard chrome plating provides better resistance to wear and corrosion than bare steel, which extends the pin's life under regular use and helps prevent rust in varied conditions. Over thousands of rounds, this protection adds up.
Do I need special tools to install this firing pin?
Installation requires disassembly of your bolt carrier group. If you're comfortable working on your rifle's internals, it's a straightforward swap. If you've never done this before, a qualified gunsmith can install it quickly and safely.
