TacFire AR15 Stainless Steel Anti-Walk Hammer/Trigger Pins - Set Black. AR15 STAINLESS STEEL ANTI-WALK HAMMER/TRIGGER PINS (SET) Specifications for TacFire AR15 Stainless Steel Anti-Walk Hammer/Trigger Pins - Set: Manufacturer: TacFire Condition: New Color: Black Fabric/Material: Stainless Steel Additional Features: Anti Walk Pin Set for Ar-15/M4 Style Rifles Country of Origin: USA Features of TacFire AR15 Stainless Steel Anti-Walk Hammer/Trigger Pins - Set: Anti Walk Pin Set for Ar-15/M4 Style Rifles -Keeps trigger/hammer pins from "walking" out of the receiver -Helps prevent wear and enlargement of the receiver trigger/hammer pin holes -Stainless Steel construction Included Accessories: HEX KEY Package Contents: TacFire AR15 Stainless Steel Anti-Walk Hammer/Trigger Pins - Set TacFire MAR108-SS: AR15 Stainless Steel Anti-Walk Hammer/Trigger Pins - Set Black