Ok barrel, do not use with a suppressor, poor threads. - Rainier Arms AR Match .223 Wylde Lightweight Barrel

The barrel didn't shoot great for the first hundred rounds (2moa). But now it's shooting one MOA with most ammo off a lead sled with a vx2 6-18. I would not buy this barrel if you plan to use it with a suppressor. It has the worst thread shoulder i have seen. It's partially due to the small diameter of the barrel. But there is no relief cut in behind the threads by the shoulder so you have to use an AccuWasher or spacer. Which is fine. But the unthreaded portion is larger than the major diameter of the threads. And contains a pretty big radius. I had to grind a radius into my AccuWasher to make it sit flat. So you're relying on a very small amount of shoulder for a suppressor alignment. When I checked my suppressor is a little off concentric but not enough for a baffle strike. It doesn't seem like this website will let me upload photos. But it's like a 0.050" useable shoulder. I will say the barrel fit in my aero precision upper beautifully where the wilson barrels were sloppy.