Recoil Spring Kit for 4.25" 9mm MAC/Tisas/Prodigy/Staccato P

This recoil spring kit includes five springs in 1lbs increments from 7lbs-11lbs for tuning your guns performance to the specific ammunition and parts you are using. They are manufactured from 17-7 stainless steel and are designed to fit 1911 and 2011 4.25"-4.4" These springs are manufactured by AQS the factory that makes springs for Noveske, Apex, Sig, CMMG, POF-USA. We lucked out and our shop just happened to be ten minutes from their factory. The springs are spray painted in a color code to identify their weight, we put green and red at the opposite end of the weights so color blind individuals can tell them apart by testing tension in their hand. 7lbs - Green 8lbs - Blue 9lbs - White 10lbs - Yellow 11lbs - Red