CMMG 55BA492 AR15 FIRING PIN SST
$8.65
$158.89
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$150.24
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The CMMG AR15 firing pin is a straightforward mil-spec replacement part built to keep your rifle running when it matters. If you've put serious rounds downrange on the same bolt carrier group, or if you're building a spare upper, having a fresh firing pin on hand is practical insurance against field failure. This is a new-manufacture component designed to work in standard AR-15 bolt-carrier groups—the kind of part that costs little but can save a hunt or match day if your primary pin gets damaged or worn.
AR-15 shooters often overlook the value of keeping common consumable parts in the kit. A firing pin is one of the most basic but hardest-working components in the bolt assembly. Whether you're a hunter who relies on the same rifle year after year, a competitive shooter rotating between builds, or an overlander who wants redundancy in the field, a spare pin is the kind of small-dollar part that makes sense to have before you need it.
CMMG manufactures this pin to mil-spec standards, so it functions reliably in any standard AR platform. It's not fancy—it's designed to do one job without fuss, which is exactly what you want from a backup component. Keep one in your maintenance kit, spare parts box, or range bag.
Key Features
- Mil-spec design for standard AR-15 bolt-carrier groups
- New-manufacture construction
- Reliable replacement or backup component
- Compact and affordable to stock as a spare
Frequently Asked Questions
Will this firing pin work in my AR-15 bolt carrier group?
Yes—this is a mil-spec firing pin designed for standard AR-15 bolt-carrier groups. It will function in any mil-spec or commercial BCG that uses a standard firing pin.
When should I replace my AR-15 firing pin?
Firing pins can wear or crack from heavy use, or break from impact if dry-fired without a round in the chamber. If you notice misfires or the pin appears damaged during field-stripping, it's time to swap it out. Having a spare eliminates downtime.
Is this a complete bolt carrier group or just the pin?
This is the firing pin only—not a complete bolt or carrier group. It's designed as a standalone replacement or backup component for use in an existing AR-15 bolt assembly.
