TacFire Buffer Retainer Pin and Spring Features The TacFire Buffer Retainer Pin and Spring set is built from stainless steel giving it strong corrosion resistance for long-term reliability inside the lower receiver. The spring is made from the same material found in genuine piano wire a detail that helps reduce the metallic twang sometimes heard when firing an AR-15 with a worn or lower-quality retainer spring. This small upgrade can make a noticeable difference in both the sound signature and the smooth function of the buffer retainer system. Designed specifically for 223 and 5.56 caliber rifles it is sized to work seamlessly with standard AR-15 lower receivers. Packaged as a 10-piece set this product gives builders armorers and shops enough spare parts to service multiple rifles without needing to reorder frequently. Having extra buffer retainer pins and springs on hand is a practical choice since this is a small part that can wear out or get lost during routine maintenance and disassembly. The stainless steel finish also makes it easy to visually confirm correct installation during a build or repair. For anyone maintaining or building AR-15 rifles the TacFire Buffer Retainer Pin and Spring 10-pack is an affordable practical parts kit to keep on the bench. TacFire Buffer Retainer Pin and Spring Specifications Manufacturer: TacFire Type: Buffer and Buffer Parts Weapon Fit: AR-15 Color: Silver Quantity: 10 Condition: New Available At: GrabAGun