Wolff Variable Recoil Spring for 1911/2011.
Each Wolff recoil spring for Colt pistols includes an extra power firing pin spring.
All springs are produced from Wolff proprietary HTCS spring material except as noted.
Each Wolff recoil spring for Colt pistols includes an extra power firing pin spring.
All springs are produced from Wolff proprietary HTCS spring material except as noted.
Open gun
Work perfect
Wolff recoil Springs.
I own several 2011 STI in 40 S&W , these springs are the best on the market.
Great Spring set
My Open guns were built using these springs. I change them once a year for optimum performance.
Seem to work
Always use Wolff Springs 40+ years