AR-15 Firing Pin
This AR-15 Firing Pin from United Defense is a mil-spec replacement component for standard AR-15 and M16 bolt carrier groups. Machined from heat-treated steel and finished with hard chrome plating, it resists carbon fouling, corrosion, and primer-strike wear over long round counts. The pin drops into any standard BCG chambered in .223 Remington, 5.56x45mm NATO, or .300 AAC Blackout with no fitting required. A smart pickup for AR builders, armorers, and shooters who want a reliable spare in the range bag or parts bin.
In stock
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- SKU
- N8448503
$8.95
Description
Features
- Mil-Spec Dimensions — Machined to military specification for true drop-in fit in standard AR-15 and M16 bolt carrier groups.
- Multi-Caliber Compatibility — Works with .223 Remington, 5.56x45mm NATO, and .300 AAC Blackout BCGs built to the AR-15 platform.
- Chrome-Plated Finish — Hard chrome plating resists carbon buildup, corrosion, and wear while reducing the need for lubrication.
- Heat-Treated Steel Construction — Hardened steel body stands up to repeated primer strikes and high round counts without deformation.
- Precision-Ground Tip — Consistent tip geometry delivers reliable primer ignition and uniform indentation depth across brass.
- Drop-In Replacement — Installs in seconds with no fitting required, making it a straightforward swap or spare for your range bag.
- Essential Spare Part — A high-wear component every AR builder and serious shooter should keep on hand for maintenance and field repairs.
- BCG Rebuild Ready — Pairs cleanly with mil-spec bolts, cam pins, and retaining pins for full bolt carrier group assemblies.
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Customer Reviews
Top customer reviews
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Great DealI bought this firing pin as a back up. I couldn't find a better price online and the low prices at keepshooting.com keep me coming back for gear. It actually looks like it's a little better quality than the one that came with my rifle. I'm glad i have it.
Competitive price
High quality -
Awesome priceGreat price. Mil spec. Swapped it out on two different BCGs to check for fit. Perfect fit.
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stock upBuy know at today's prices, remember $99 Bolt carrier groups?
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Good quality and priceThis is a must for your AR 15 spare parts kit. If you are having a lot of misfires, check your firing pin before knocking your ammo. Like any other moving part that is under a lot of force, firing pins do wear out. Pick up some spares from KS while they are in stock and at a decent price.
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