Shoots well but gas port undersized - Hitman Industries OPMOD MG223 Spiral AR-15 .223 Wylde Medium Rifle Threaded Barrel

Was getting decent groups with this barrel, but the gas port was undersized enough to cause cycling issues. Tried and adjustable gasblock but even at max couldn't get reliable function. Might have to enlarge the gas port.

Aside from that the barrel was great, no wobble in my upper and shoots sub moa-groups with a suppressor (to get it to function)