Got it. That clarifies what I'd read. Figured based on previous responses it couldn't hurt to get a barrel and BCG from the same manufacturer. Although if I go another route, sounds like a BCG with forward assist serrations wouldn't be a problem in a rifle with no forward assist? And to clarify your previous questions, 98Z5V, this one will start out as a plinker I suppose. Going to use an adjustable stock. Have an Odin Works O2 Lite 17.5" handguard on the way, and made sure I got the high profile. Got good reviews and I'll admit, a 17.5" handguard on an 18" barrel with a fat muzzle device is what I was going for. Strictly cosmetic, and light. Probably a foregrip before a bipod most likely. Haven't gotten as far as optics yet. Want to get it together with iron sights and go from there. I know of one place where I could stretch it out past 300 yds here, which likely just means I just don't know the right people.