Rise Armament anti-walk pins for AR-15 hammer and trigger
The Rise Armament .154 inch anti-walk pins replace the AR-15 hammer and trigger pins, locking them with screws to prevent them from walking out. A torque of 8 inch-pounds is recommended for tightening the screws, without exceeding 11 inch-pounds.
The outside width of AR lowers in the pin area varies by manufacturer. If the pins are too long for your receiver, they can be shortened slightly by carefully and evenly filing both ends; however, this is not necessary, as longer pins do not affect the function or performance of the carbine.