I was able to shoot the gun a few times yesterday evening and I'm going to give all my thoughts of it.
1. It is more quiet than the blackout was with commercial ammo straight out of the box. I haven't even started tinkering with anything yet or reloading for it yet. I have no doubt that it is going to be a very quiet gun when I am finished with it.
2. Magazines are the main problem right now. I haven't found a magazine that will let me load more than 4 rounds reliably without swelling the magazine body so much that I cant' insert the mag or remove it by hand.
I will say that if I take the upper off and load it with the magazine seated, I can top load the magazine ALMOST to the stated capacity of the magazine. But, anyone with a semiauto is NOT going to want to do that.
But, I did want to throw that out there. It's a lot like the 6.8spc when they were coming out before Cproducts made an appropriate magazine for them.
3. The bolt was very hard to close yesterday evening. I was speaking with one of my buddies today and he mentioned that he took out the rubber buffer out of his extractor on his semi AR. I did the same thing to this one a while ago and it closes much better now.
I was able to close the bolt, but with the rubber buffer under the extractor, took a considerable more amount of force than should've been necessary. But once I removed it, I admit that I am looking forward to shooting it again when I get the first chance.
You'll be able to hear the "snap" in the video of the extractor going over the rim if you watch the video in a few minutes. It was the loudest part of the action. And why I included it in the video.
And I think finally, on another note, I am going to chamfer the edge of the slot that I milled for the bolt handle because I walked away bleeding from my thumb and my left pointer finger both from being sliced open while rubbing up against the slot like a razor. That's totally my fault, but it is going to get a very healthy chamfer with Mr. Dremel before I take it back out the next time. Even if I do have to refinish the receiver when I get done.
I don't like vampire parts.
Anyway, here's a short 30 second video showing what it sounded like. The camera was about 3 1/2 feet to the right of the muzzle of the gun for reference.
And like I said, I haven't done anything to port the barrel, no wipe in the suppressor or anything. This was straight out off of my workbench with one of my F1 9mm suppressors on it. In short, it shows a lot of promise and I look forward to seeing what I can do with it.
https://www.youtube.com/watch?v=asCOtlwmoWE