Enhance your shooting experience with the Wilson Combat Steel Shok Buffer Recoil System designed for full-size .45 ACP firearms. This kit optimizes performance and longevity by including two durable SHOKBUFF buffers and a heavy-duty recoil spring. Ideal for those using 230 gr. hardball or standard pressure JHP self-defense ammunition as well as 10mm target rounds with a power factor ranging from 175 000 to 195 000. Crafted from quality steel with a sleek silver finish this 5-inch system ensures smooth operation and reduced wear. Replace the SHOKBUFF every 1 000 rounds and the recoil spring every 2 000 rounds for best results.