▼ 67% below avg
CMMG Mk4 AR-15 Firing Pin Retaining Pin
Lowest Price
$0.73
MSRP
$0.99
Savings
26% off
In Stock at
5 Stores
Updated
Jun 26, 2026
Compare Deals from 9 Retailers
Lowest price first
Lanbos Armory Best
● In Stock
$0.73
OpticsPlanet Coupon
Code ARMSAGORA — 7% Off Most Items
$0.87
$0.94
MidwayUSA
● In Stock
$0.95
GunMag Warehouse
● In Stock
$0.99
Red Team Armory
● In Stock
$11.97
Shooting Surplus
● Out of Stock
$0.82
Brownells
● Out of Stock
$0.91
Shooters Choice
● Out of Stock
$0.95
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Firing Pin Retainer
Fits AR-15
Steel
Specifications
Description
The CMMG Mk4 Firing Pin Retaining Pin is perfect for your next AR-15 build or just keep a few on hand for spare parts.
