13-15 LB SPRINGS ARE MOSTLY USED FOR COMPETITION SHOOTING, OR IF USING A RECOIL COMPENSATOR ON YOUR BARREL.
LIGHTER WEIGHT RECOIL SPRINGS HAVE A FASTER RECOIL TIME AND ALLOWS THE SHOOTER TO STAY ON TARGET AND RE-ADJUST TO THE TARGET FASTER AND EASIER
13 - 15 LB RECOIL SPRINGS ARE REDUCED POWER AMMUNITION LOADS
17 LB RECOIL SPRING IS THE FACTORY WEIGHT RECOIL SPRING
20 - 22 LB RECOIL SPRINGS ARE FOR HEAVY POWER AMMUNITION LOADS +p or +p+
THE CORRECT LOADS ARE NECESSARY TO MAKE SURE YOU DO NOT HAVE CYCLING ISSUES.