Wilson combat's 17# flat-wire recoil spring 5",.45 acp, chrome silicon 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).Our testing has indicated that these springs have a service life up to ten times greater than conventional coil springs.Features improves cycling and overall operation,.250" rod diameter; compatible with standard recoil spring plug and with shok-buff recoil buffers.

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