DPM Shadow recoil system

I didn't have one on a Shadow but I did try it in a Glock. I didn't really notice one way or the other. Personally I wouldn't spend the $100ish especially with the Shadow. It's a heavy enough gun and with proper grip, those alone should be able to mitigate any recoil felt. My $.02.
 
Shooters Inc on YouTube did a good video on them. I have one on my Glock but haven't shot it very much. I plan on getting one for my CZ 97B and doing some thorough testing with it. I personally wouldn't get one for the Shadow 2 if you plan on shooting IPSC Production.
 
I have one for my 9mm CZ TS. I ran it for quite a while, probably about a year, then decided to spend a bit of time at the range swapping between it and all my regular springs back to back. I honestly didn't think it had any advantage, and I ended up deciding on my heaviest regular spring. So now it sits in a baggy.
 
I tried a DPM recoil system. I'd say it's a waste of money. It uses a heavier spring to reduce rise but that heavier spring causes the slide to slam close with more force causing more muzzle dip. On the Shadow 2 I'd recommend going with a lighter recoil spring 11lbs and a 13lbs mainspring.
 
When glock went from a single recoil spring to a multispring system the difference was very noticeable especially on a G22. It's not about recoil reduction but rather ease of muzzle control during and after the recoil impulse. The benefit of a multispring system is you can use a light main recoil spring (so there's little dip of the muzzle when slide return to battery) but still prevent the slide from bashing the frame thanks to the other springs progressively increasing the pressure on the slide as it moves back from the recoil. On a 9mm shadow 2 most won't notice a difference but on a 40SW one just might.
 
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