Davidson Defense anti-walk pins are great for drop-in triggers; they replace the original hammer and trigger pins and are retained by special retaining for a positive lock. One side is flared and broached, and the other side is threaded for a screw. Fits small pin lowers (.154).
Armaspec Stainless Anti-Walk Pins
Davidson Defense Ocicat AR-15 Pistol Upper Receiver 7.5 .300
AR15 Rifle Deals, AR15 Rifle Parts, AR Rifle Kits, AR15 Lowers and Upper Receivers
JMT Black OPS EVO Single-Stage Straight Trigger w/ Anti-Walk Pins
AR-15 Complete Anti-Rotation Trigger/Hammer Pin Set (Anodized
AR15 Rifle Deals, AR15 Rifle Parts, AR Rifle Kits, AR15 Lowers and Upper Receivers
Davidson Defense AR-15 3 lb Drop In Sierra Skeletonized
LPK's (Lower Parts Kits)
Receiver Sets: Davidson Defense AR-15 Left-Handed Billet Stripped