About the FN Herstal FNP&FNX 4.5″& Tactical 5.3″ Pistol Recoil Reduction Spring Rod by DPM Systems Upgrade your original FN Herstal FNP&FNX 4.5″& Tactical 5.3″ with the DPM Systems Recoil Reduction Spring Rod and experience a revolutionary recoil reduction. This guide rod/spring system has advanced shock absorption technology that decelerates the slide before it reaches the […]