Smyth Busters: Does Your AR-15 Need Anti-Walk Pins?
This video delves into the AR-15 "anti-walk" versus "anti-rotation" pin controversy, distinguishing their functions and addressing common misconceptions. Caleb and Brownells Gun Tech Steve clarify that anti-walk pins are essential for certain aftermarket cassette-style triggers, preventing pins from walking out due to the absence of a standard hammer spring. Anti-rotation pins, on the other hand, are designed to prevent pin rotation, which theoretically mitigates wear on receiver holes over extensive use, though the video suggests this is often a solution to operator error. The discussion also covers pin breakage, attributing it to firearm issues like overgassing rather than pin design, and reassures viewers that incorrect pins likely won't cause problems until significant round counts are reached.
