Tacfire AR-15 Buffer Retainer Pin and Spring Features The Tacfire AR-15 Buffer Retainer Pin and Spring set replaces one of the small but essential parts that keeps the buffer assembly properly seated in the lower receiver. Its stainless steel construction resists corrosion and wear better than a basic steel pin which matters for a part that sees repeated spring tension and contact every time the rifle cycles. The spring itself is made from piano wire grade material the same type of wire used in precision spring applications which helps quiet the twang sound some AR-15 owners notice when the buffer retainer vibrates under recoil. Designed specifically to fit 223/5.56 caliber AR-15 platforms this pin and spring combination is a straightforward reliable fix for a worn or lost retainer. Packaged 10 sets to a pack this Tacfire kit gives armorers gunsmiths and builders enough spares to service multiple rifles or keep extras on hand for future builds. Having a supply of retainer pins and springs ready means a lost or worn part during assembly or cleaning does not stall a build or a range trip. The small size and low cost of this part make it an easy addition to any AR-15 parts kit or spare parts bin. This Tacfire buffer retainer pin and spring set in stainless steel is available for sale at GrabAGun for DIY builders and armorers maintaining AR-15 rifles. TacFire AR-15 Buffer Retainer Pin and Spring Specifications Manufacturer: TacFire Model: AR-15 Buffer Retainer Pin and Spring Compatible Hosts: AR-15 Material: Stainless Steel Color: Silver Quantity: 10-Pack Available At: GrabAGun