Surprisingly quiet actually. I usually run a suppressor, but I’m waiting for the mount to come in. I use brakes so it’s going to be a bit louder, however the piston system on the 17.4" barrel has lent itself to be pretty quiet naturally. These guns were designed at the outset to be suppressed so I anticipate it’s going to be pretty awesome once my mount comes in.
There is no shockwave.
The recoil impulse is more “mechanical” feeling than an AR15 or AK patterned rifle. It’s not a bad thing. The gun talks to you and you can tell when it locks open after the last round fired.
It’s extremely accurate and very pointable.
Tuning the gas system is easy. I turned it all the way down so the gun wouldn’t cycle and just kept turning it up so that weakly loaded Tula Steel would lock the bolt open on the last round fired. I then gave it two more clicks on the gas system to ensure reliability and I haven’t messed with it since. When my suppressor mount comes in, I’ll likely turn the gas back down to save wear and tear on the gun.
As far as ammo it eats everything. I’m about 1500 rounds in with various types of brass and steel. I haven’t cleaned the gun at all and the other day while running Tula Steel 55GR OTHP I had a stuck case. The gun had been fired continually for about 500 rounds worth in about 30 minutes, so it was pretty hot and dirty. I would blame the ammo and not the gun in this case. I was beating it pretty hard. After the gun cooled the case popped out by me merely dropping a coated cleaning rod on it once. The case was covered in carbon. If you’re going to run steel cased ammo, I would recommend something like a 200 round cleaning interval. At the very least yank a bore snake through with a little CLP to break the crap up. It’s worth noting that the extractor on the RDB is very high quality. It ripped the rim off the stuck case when I mortared the gun trying to get the case out. That was cool…
Overall, I love this gun. It’s the first gun I’ve owned in a long time that I genuinely itch to shoot and get excited about.
10/10, would buy again.