DPM Spring Kit Walther PDP 4.5" & 5"

Description The DPM Mechanical Recoil Reduction System is a direct replacement for the stock recoil rod and does not change the configuration of the pistol. As always, DPM products are designed and developed with user’s safety as a priority. Exceptional manufacturing and engineering using high-end materials. ATTENTION! The kit is NOT compatible for the 4" Barrel AND for PRO SD 4.6". DPM Mechanical Recoil Reduction System for Walther PDP 4.5" & 5"  18 settings This DPM System works with 6 different buffer recoil springs which each one offers different spring force (forces are listed at the end of the description). The kit includes 3 external springs, 6 buffer recoil springs, 1 Washer and 1 safety pin. The longer spring (more coils) is stronger and has a heavier pound rating than the shorter spring. Forces: Soft 0.7mm Short = 8.0 kg/ 17 lbs Medium = 9 kg/ 20 lbs Long = 10 kg/ 22 lbs Hard 0.8mm Short = 9.0 kg/ 20 lbs Medium = 10.5 kg/ 23 lbs Long = 11.5 kg/ 26 lbs Suggestio