Sig Guy P320 M18 & P320 Compact Single Flat Wire Recoil Springs
 
 *** SPRING ONLY *** 
 
Available weights:
12 lbs
14 lbs
16 lbs
18 lbs
20 lbs
 
Made for 3.9 inch P320 slides using compensators and suppressors.
Manufactured from chrome silicon alloy
Also compatible with ISMI and Springer Precision M18/Compact guide rods