Three times the price for little to no gain over standard tunable guide rods. - DPM SIG Sauer P320 Compact Carry 3.9in Barrel Mechanical Recoil Reduction System

I was quite excited to try this system due to the reviews you see about them. Unfortunately, after a good bit of testing with the spring rates in USPSA and practice I neither see or feel a difference in felt recoil or muzzle flip. I have been using a stainless guide rod and spring for many years now, switching to the DPM system made no difference I can see or feel. It gets 3 stars simply because it is better than the stock system. I swapped back to my other guide rod and spring combo as it is better tuned to my ammo and shooting style for competition.