AR-308 Mk3 Firing Pin

Name: AR-308 Mk3 Firing Pin
Brand: CMMG
Availability: InStock

CMMG · Upper Parts

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Best price

$12.49at GunMag Warehouse

In stock checked Oct 1, 2026

Buy at GunMag Warehouse

Compare 5 stores

Where to buy

Store	Price	Availability	Buy
GunMag Warehouse Best price	$12.49checked Oct 1, 2026	In stock	Buy at GunMag Warehouse
MidwayUSA	$14.95checked Oct 1, 2026	In stock	Buy at MidwayUSA
CMMG	$14.95checked Oct 1, 2026	Check store	Buy at CMMG
Brownells	$14.31checked Oct 1, 2026	Out of stock	Buy at Brownells
OpticsPlanet	$14.89Salechecked Oct 1, 2026	Out of stock	Buy at OpticsPlanet

Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.

Price history

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Lowest in-stock price in the last 30 days: $12.49 at GunMag Warehouse. Dashed line = out of stock. Tracking since Sep 28, 2026.

Show the prices as a table

Store	Latest	Lowest	Highest
Brownells	$14.31	$14.31	$14.31
CMMG	$14.95	$14.95	$14.95
GunMag Warehouse	$12.49	$12.49	$12.49
MidwayUSA	$14.95	$14.95	$14.95
OpticsPlanet	$14.89	$14.89	$14.89

Since Sep 28, 2026.

About this part

The AR-308 Mk3 Firing Pin is an AR-10 upper part from CMMG. It's sold by 5 stores (2 in stock), from $12.49 to $14.95. The lowest in-stock price in the last 30 days was $12.49 at GunMag Warehouse.