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FN 509 3.7" Compact & 4" Midsize

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FN 509 3.7" Compact & 4" Midsize

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B.O.S.S : Black Oxide Stainless Steel its an innovative coating technology applied usually on the visible parts of the recoil system.

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In Stock
Compatibility Information

Compatible for 509 Series:

Compact Tactical 4.32"
Midsize Tactical 4.5" 

SKU: 1000195
EAN: 5213007221957
MPN Code: MS-FNH/4
Tags: 9mm

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. 

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

How it works


Made in Greece – EU.

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