FN 509 3.7" Compact & 4" Midsize

DPM Adjustable Mechanical Recoil Reduction System for FN 509 3.7" Compact & 4" Midsize

The DPM Recoil Rod for the FN 509 Compact & Midsize Tactical models is a direct replacement for the stock recoil rod and does not change the configuration of the pistol. 

This high-end tech system works due to the multi-spring intricate rod (2 springs) in combination with the 4 external springs  that work as buffer, and controls the functionality of the pistol.

 The system includes 4 external springs, 2 x 1.0 mm wire diameter and 2 x 1.15mm wire diameter, all with different power rates.

The soft springs are designed to serve threaded barrels and compensator modifications. 

**As we lead the evolution of recoil reduction technology, products may change versions (new design with different springs, with or without plugs, washers, etc.) without any prior notice.** 

Power Rates

Slide on the battery: 

Soft Springs 1.0mm

• Short:  9lbs
• Long:  10lbs 

Strong Springs 1.15mm 

• Short: 10lbs
• Long:  11lbs

Slide full open position (approx.):

 Soft Springs

• Short: 16lbs
• Long:  17lbs 

Strong Springs 

• Short: 18lbs 
• Long:  20lbs  

 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

Lifetime Warranty. 

Millions of our patented products are in service to military, law enforcement, sports and civilian firearms around the world. 

How it works

Made in Greece – EU.

• E-shop / Recoil Reduction Systems for Pistols / Fn Herstal