The above DPM Recoil Reduction System includes 4 external springs so the shooter can fine-tune the weapon for his/hers personal standards. The longer spring (more coils) is stronger and has a heavier pound rating than the shorter spring (slide on the battery).
Also the system works due to the multi spring intricate rod (3 springs) and effect like a brake on the slide, but only before stopped on the frame to the last 6 to 8 mms of the movement.
In some cases the DPM Recoil System offer almost double force in the slide full open position compared with the factory OEM spring , so the slide of the pistol touching the frame gently and offering less recoil to the pistol.
Further the moving parts of the pistol are protected, offering longer life to the pistol.
The washer must always be installed when the DPM Recoil Rod and springs are used.
•Faster follow up shots
•Improved firing speed
•Slide and Frame Protection
•Elimination of jams
•Significant recoil reduction
•Better double-tap concentration
•Better control and greater accuracy
BERETTA 92 FS COMPACT 9mm – Installation Instructions