Absolutely worth it! - OpticsPlanet Exclusive Maxim Defense Industries RDB Roller Delayed Blowback System

Some reviews here and on YouTube state that they didn't feel much reduction in recoil. That can happen if you don't shoot often as recoil memory can be really fuzzy. For myself, I went through 2 32 round mags in my 10.5" Barrel Colt 9mm SMG then I removed the old buffer assembly and spring (and I noticed that the small polymer buffer attached to the rear of the buffer assembly was beat to pieces from hitting the inside end of the buffer tube!), then I drove out the roll-pin that held the weight in the back of the bolt carrier. I installed Maxim RDB buffer and WOW! It was a huge difference! Yes, there is a bit of extra resistance to overcome roller-delay, but its not bad at all, with the right charging handle. This really works amazingly well and the difference is really quite noticeable, especially, if you do what i did and take your hammer & roll-pin punch with you to the range or have a 2 same or similar AR PCCs for a side by side comparison. I think I will try the 8.3 ounce version on my 10mm AR...