Complete .300 BLK upper with charcing handle and bcg. I traded into this a couple of years ago and remember precious little about it. Things I know for sure: -AAC Blackout flash hider -KAK Industries barrel, 9" 1:7 5R. This one: https://www.kakindustry.com/ar-15-p...0-blackout-9-inch-pistol-stainless-barrel-5r7 Things Im unsure of: -Mfg of upper receiver. Only roll/forge mark is a square and its not much help. -mfg of bcg -mfg of hand rail. It's 8" keymod. As you can see in the pic of flash hider, there's a slight bit of surface rust that I'll be working on getting off. I HAVE fired this, and it operates just fine. I only have about a hundred or so through it. IIRC previous owner said he had less than 250 through it, so let's say a round count of 500 to be on the safe side. What does the hive mind think a fair price would be for this set up?