DPM Recoil Springs for FN Herstal FN 509 Compact 3.7" & Midsize 4.0" Barrel

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 buffers and control the functionality of the pistol.

The system includes 4 external springs, 2 x 1.0mm 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.

Unique Features

• Adjustable Mechanical Recoil Reduction System
• Multi-spring intricate rod (2 internal springs)
• 4 external springs (2 x 1.0mm wire diameter and 2 x 1.15mm wire diameter)
• Allows fine-tuning of recoil system for different ammunition and configurations
• Compatible with FN 509 Compact 3.7" & Midsize 4.0" Barrel models, including tactical versions
• Made in Greece - EU
• B.O.S.S: Black Oxide Stainless Steel – A coating technology applied to the visible parts of the recoil system, enhancing durability.

Power Rates

• Slide on the battery:

  • Soft Springs 1.0mm:
    • Short: 9lbs
    • Long: 10lbs
  • Heavy Springs 1.15mm:
    • Short: 10lbs
    • Long: 11lbs

• Slide full open position (approx.):

  • Soft Springs:
    • Short: 16lbs
    • Long: 17lbs
  • Heavy Springs:
    • Short: 18lbs
    • Long: 20lbs

Included in the Box

• DPM Recoil Rod
• 4 external springs (2 x 1.0mm wire diameter and 2 x 1.15mm wire diameter)
• Instruction Manual