DPM Systems FN HERSTAL FNP 4.5″ & TACTICAL 5.3″ BARREL .45ACP

About the DPM Systems FN HERSTAL FNP 4.5″ & TACTICAL 5.3″ BARREL .45ACP Recoil Reduction Spring Rod by DPM Systems:

Will Fit: FN Herstal FNP-45 Tactical   –  .45ACP

FN Herstal FNP-45 Tactical Recoil Spring Assembly Instructions

The DPM FN Herstal FNP-45 Tactical Recoil Reduction Spring Rod by DPM Systems replaces the original factory guide rod/spring system and produces an advanced recoil reduction by absorbing the shock gradually and slowing the slide down before its impact with the frame of the pistol. Because the system is an interior modification of your pistol it will not change the external dimensions of the handgun, therefore there is no for a new holster, sights or any other accessory you own.

The DPM FN Herstal FNP-45 Tactical recoil spring system works due to its multi spring rod design (three springs) by producing an advanced recoil reduction technique by gradually slowing the slide down before impacting the frame of the pistol using Spring No. 1 (see fig. below) and Spring No. 2. The third spring (Spring No. 3) which is contained within the rod itself controls the movement of the slide so it never rams on the frame.

DPM Mechanical Recoil Reduction System for FN Herstal FNP 4.5″ & Tactical 5.3″ Barrel

This system works due to the multi spring intricate rod (3 springs) and controls the functionality of the gun. The third spring which is contained within the rod controls the movement of the slide so it never rams on the frame.

The system includes 2 external separate springs. The springs are different in length with the longest being heaviest when the slide is on the battery, so the shooter can fine-tune the weapon for his/hers personal standards.

Power Rates

Slide on the battery

• Short Spring: 10lbs
• Long Spring: 11lbs   

 Slide full open position

• Total power: 24lbs (approx.) 

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

This recoil springs are a direct replacement for the stock recoil rod and does not change the configuration of the pistol.

The external springs are different in length with the longer offering heavier slide travel and locking than the shorter spring.

*Dimensions of the spring are the same as the original.