I run 16.5 pound recoil springs in my SA TRP Operator and the Colt M-1911 .45ACP. The springs get change every 6 month or 5,000 rounds whichever comes first. Question how often do you change the oil in your vehicle?
Might want to go here: http://www.gunsprings.com/Semi-Auto%20Pistols/cID1
Might want to go here: http://www.gunsprings.com/Semi-Auto%20Pistols/cID1


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