Reviews & Ratings for OpticsPlanet Exclusive Maxim Defense Industries RDB Roller Delayed Blowback System — 39 reviews — Page 1

Works great! you have to take the weight off your ar9 bolt if you're using an ar9.

Installed on my suppressed Mk2 9mm from griffin. The recoil impulse went from making my collar bone ache after a few hundred rounds with a pistol brace to a light tap that doesnt take me off target at all. It doesn't quite reach rimfire territory, but it's so very close. Charging is more difficult, but still can be done quickly with 1 hand and a normal ambi handle even with my unimpressive upper body strength. I can now run the trigger as fast as my fingers will allow without coming off target until the massive cloud of gas makes my eyes burn. The gas to the face IS lessened, I no longer have to stop partway through a 32 round mag to blink away tears, but it's not a perfect cure by any metric when running suppressed. If you have a heavy bolt weight and buffer, expect a noticeably lighter gun as well.

I bought this for a PSA AR-V 9mm with a Rarebreed L3 selective fire trigger. Although not rated for fully auto, it worked quite well on full FRT. It softens the recoil a little on semi-auto, however, the difference is not like night and day from a heavy buffer and spring, but it is noticeable. I don't know if the $200 price tag is worth it, but I'm keeping it in the gun.

This is coming from someone who shoots a JP-5. Easy to install or swap out . I replaced my JP silent capture spring with the Roller delay buffer. My gun shoots awesome. Here's the issue . It's takes almost 3 to 4 times the pressure and strength to cycle the rifle. If I get it and lock it back it's okay. Or if I have a chamber flag in it & the bolts is not all the ways closed it's okay. But if the bolt is closed it's a bear. I had it initially in a side charger (Gibbz Arms on top of a JP lower) configuration and it was very hard to hand cycle, had to wear a glove just to prevent cuts. So then I put it in a QC10 rear charger and it was much better. Still hard to cycle but much better. I do compete and I got the same from several others who had purchased the system . This for me was more of a let's see purchase. I have several PCC's & after shooting my JP-5. I did shoot it in a match & did fine but had no empty starts and my bolt locks back on empty . I wouldn't get another one but I will keep & use the one I have. I do not regret the purchase . Reducing 75 % felt recoil for under $200.00 is unheard of .

A bit more umph to charge it but worth every penny. Had a rtb bolt and adjustable weight deadfall buffer, jummpy little sbr. Added this in and was getting fist sized mag dumps. 100% worth it.

I regretted buying the Daniel Defense PCC at first. It's an excellent carbine, but it is just direct blowback. The hydraulic buffer softened recoil considerably but didn't do anything for muzzle rise. When I saw this roller delay buffer, I thought, "No way it can be that easy." But I had to try.

It was that easy.

This thing really works. It makes a massive difference. The only downside is that it becomes hard to charge (hard to pull the charging handle back because you have to overcome the rollers...hence "roller delay"). It's very hard with one finger (relatively) but pretty easy with two fingers (one on each side of the charging handle). To me that's not really a downside, just something to remember. In any case, it's well worth it. Without any recoil mitigation, it keeps all hits within 1/2 to 1/3 of a USPSA A zone at 10 yards. With recoil mitigation (good, solid grip), that area shrinks. I use mine with a comp, but without the roller delay buffer, the comp didn't do all that much.

So now I love my Daniel Defense PCC. It's a night and day difference from stock.

I was having bolt bounce issues shooting a cheep BCA side charger AR so I decided to try this roller delayed buffer & this thing seems to have done the trick , I’ve only shot about 5-600 rounds so far & all is good only time will tell how good it holds up but it changed the recoil impulse for sure . No regrets picking this up from optics planet who had it for the lowest price around .

Very well made and installation takes all of 3 minutes.I went with this over the jp short stroke scs bc of reveiws on the pcc topic.I cant wait to try it out

I removed the slug in my carrier, and installed this. Cut my recoil by significant amount. I'd say 30-50%, it's very noticeable.

I removed the slug in my carrier, and installed this. Cut my recoil by significant amount. I'd say 30-50%, it's very noticeable.