I use the DPM Recoil reduction system on my FN FNX Tactical, that I have set up to shoot 45 Super, but it allows me to use a different spring for 45 ACP. It allows one to tune it to the intended use.
CGW didn't seem too excited about it for my RAMI, that I am sending to them, but I assume they have tuned their work to the stock or known springs.
I would like to hear from anyone who has tried it on the RAMI though, and if they evaluated on standard and plus P loads.
Cheers,
Tony