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Walther Q4 Steel & OR version - 4″ Barrel



DPM Mechanical Recoil Reduction System Walther Q4 Steel & Polymer Frames (TAC/M2, OR) 4″ Barrel Open

This DPM System works with six different buffer recoil springs which each one offers a different spring force (Forces are listed at the end of the description).

The System is included with 3 external springs, 6 recoil springs, and a safety pin.

The longer spring (more coils) is stronger and has a heavier pound rating than the shorter spring.

Feel free to try any possible combination of the external and buffer springs to fine-tune the pistol function depending on the power of the ammunition is used and according to your personal standards.

ATTENTION: Read installation instructions before use.


Buffer Spring: 0.7mm Soft                                                

Short:        8.0 kg/ 17 lbs

Medium:  9 kg/ 19.8 lbs

Long:        10 kg/ 22 lbs


Buffer Spring: 0.8mm Strong

Short:          9.0 kg/ 20 lbs

Medium:   10.5 kg/ 23 lbs

Long:          11.5 kg/ 26 lbs

Overall Advantages

  • 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