Armaspec Anti-Walk, Anti-Walk Pins, Standard .154 Sized Pins, Keeps Hammer/Trigger Pins From Coming Out, Fits AR 5.56/.223 and AR 7.62/.308, Stainless Finish ARM136-SS High quality components and precise manufacturing make Armaspec parts ideal for maintaining and upgrading firearms. The durability" reliability and excellent build quality of these parts will ensure years of service you can count on.