Out of stock
SKU: 100045054
UPC: 785939517910
MPN: M4FIRINGPIN
The AR-15 Firing Pin from Sons of Liberty Gun Works is a critical bolt carrier group component engineered for reliable ignition across modern tactical rifles and competition platforms. Designed for shooters and operators who demand absolute reliability under demanding conditions, this firing pin serves as the bridge between hammer strike and primer ignition—a role that directly impacts both safety and shot consistency. Whether you're running a duty rifle, precision build, or competition setup, a quality firing pin is non-negotiable for maintaining dependable function across thousands of rounds.
Sons of Liberty Gun Works manufactures this firing pin to exacting mil-spec standards, ensuring proper geometry and hardness for consistent primer strikes without risk of light strikes or overshoots that could compromise safety margins. The pin's hardened steel construction resists wear and deformation under repeated hammer impacts, maintaining dimensional integrity across extended service life. Precision manufacturing tolerances guarantee reliable feeding into the bolt carrier's firing pin retaining pin channel, eliminating the wobble or binding that can occur with inferior aftermarket components. The design accounts for proper inertial behavior during bolt cycling, preventing unintended primer detonation during carrier travel—a critical safety feature in any semi-automatic rifle system.
Law enforcement armors, military personnel, and civilian shooters upgrade to premium firing pins when rebuilding bolt carriers or replacing worn original equipment. Installation requires disassembly of the bolt carrier group and simple pin removal—a straightforward maintenance task well within the scope of field-level rifle maintenance. This firing pin works seamlessly with standard AR-15 bolt carriers across 5.56 NATO, .223 Remington, and .300 Blackout platforms, making it a universal upgrade for any modern Stoner-pattern rifle system. Keep a spare on hand in your maintenance kit for immediate replacement if wear or damage occurs downrange.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
