I went with this Blackout upper @Xavier2342 $490 with discount code on opticsplanet. Still more than I wanted to pay, but Bushmaster's one of the brands I preferred in the price range(below $500). It's ready to fire, straight out of the box(just lube). I plan on moving the EOTech red dot to this .300 AAC Upper & tranferring the Burris scope/micro red dot combo to the stock S&W AR15/223 upper. Bushmaster 308, which has the Burris combo on it right now, I'll likely get a scope for in the future(rifle isn't in my rotation right now).