Hit the range with mine today for the first time.
I shot roughly a hundred rounds with perfect function, other than the first round in each magazine took a little bolt manipulation to get the round chambered. The case mouth was catching on the top of the feed ramp. I'm hoping this very abrupt edge will soften with some usage.
Update two days later...The first rounds now enter the chamber effortlessly. :mrgreen:
I was shooting at and hitting chips of clay pigeons on the berm at 50 yards when I figured out the Kentucky windage. When I got home, I performed a sight adjustment for windage. I discovered the little tiny set screw requires a quality allen wrench to loosen it. The hex-bits in the cheap gun-tool sets were not up to it, including the Pachmayr brand bits. Not a big deal, but it's a tiny little internal hex, and it was tight. A good old fashioned American allen wrench finally did the trick. Compared to the tip of a ball point pen, you can see just how small this screw is. :mrgreen:
The peep sight, although not really a peep sight since it's a ghost ring mounted on the barrel, was very difficult for me to see. A true peep sight mounted to the receiver is a better choice for me. Not a criticism, but an observation. My original PC4 carbine, with the receiver mounted ghost ring, is far easier for me to shoot well.
I'm not a red-dot kind of person, but I did mount one to this gun after I was done at the range, for an experiment the next time out.
I also encountered some confusion when changing the mag insert from the SR9 insert to the Glock insert. The manual said to push the mag release while simultaneously pushing an internal plunger in the magwell. As soon as I pushed the mag release, the mag insert came out easily before I even pushed on the plunger. Further, it said pushing the plunger was not required with the Glock mag insert. No matter what it says, the change from the SR9 adapter to the Glock insert was effortless.
From the box, with two butt-spacers installed, the length of pull was 13-3/8", which I think is quite plenty for this kind of gun. There are two more spacers in the box, which when installed, would add nearly another inch to the length of pull. This is not a trap gun, and too long a length of pull would in my opinion, be a hindrance.
In my less than scientific test today, I shot bargain-basement 115 gr ball, 124 gr NATO, and 147 gr HST's. Didn't matter. The little gun handled them all the same.
In a nutshell, this is a very decent and effective little carbine, for what it's designed to be. In fact, it operated with perfect monotony.