Robocop, I never fired it. I brought 12-year-old twin boys to the shoot, so I spent most of the hot-range time loading magazines as fast as I could and supervising their shooting. I estimate that I may have fired 30 rounds that weekend, maybe a few more depending on how many were in a sweet suppressed 10/22 I got pressed into shooting.
I heard it was hard to get the RFB sighted in, but my main concern with it would still be the ejection. I've heard Kel-Tec say that there's no surface where the casings can get enough friction to stop up that forward ejection chute, but in the example I held, where the stamped-metal chute reaches the front sight block, the sight block is cut square while the chute is a U-shaped channel. Therefore there's a spot on the lower right where the case has been traveling in a round-bottom chute, and then it encounters a slight lip.
Now, most of the time, that won't matter, because the cases will be lying flat in the chute like logs in a flume, and they'll be facing forward, so the only part that will encounter that lip will be the sloped shoulder of the case. But let the angle of the case change, and it makes me wonder. Now, that's nothing but my speculation, of course. I didn't observe anyone with a failure to feed or eject, and we were out there in the dirt. And frankly, the lip I'm talking about would take a few minutes to correct with a dremel at your kitchen table. Also, I don't know if the RFB Oleg had for the shoot was a full production piece, so I hesitate to criticize minor machining issues like that one that may not even be seen on the rifles that ship. But that was my impression.
On the upside, the ejection worked great for a variety of shooters, and I really like the concept. I still have a few rough patches on my left elbow from 2nd degree burns sustained from .223 brass at an Appleseed event two weeks ago, and I had to set up a barrier to keep my brass off my son at the same event. The RFB would never have that problem, and it's true also that it is perfectly ambidextrous. There is no operation that is different for a lefty than a righty on that gun, which is nice.
I would need to know where the price will settle in the end before I decided whether to buy one. Also, I can't legally own the suppressor in Illinois, but I honestly don't think I'd want one on the RFB, at least in .308. Why bother? The thing was louder with the suppressor than a .45 without, and I wear ears to shoot those. Maybe in .300 Whisper or something, but not .308. If I have to wear ear protection, I don't really see the point of the suppressor. It's not going to hide my position, it's not going to keep my neighbors from complaining about the noise, and it's not going to get rid of my ear protection. What other reason is there to suppress a gun?