Wilson combat's flat-wire recoil spring kit,.45 acp, 17 lb.Recommended use- full-size 5".45 acp shooting 230 gr.Hardball equivalent or standard pressure jhp self-defense ammunition with a power factor of 175,000 to 195,000 (velocity x bullet weight = power factor).The average service life is 40,000 rounds.Improves cycling, overall operation and recoil spring life.Compatible with standard recoil spring plug and shok-buff recoil buffers.Includes.250" rod diameter, recoil spring guide and 17# flat-wire recoil spring.

Finish: Black
Type: Recoil Spring Kit
Model: Flat-Wire Recoil Spring Kit
Dimensions: .250 x 5"
Size: Full Size
Material: Chrome Silicone Steel