I’ve always hated, and I mean HATED 300 BLK. No reason in particular other than I’ve never had much use for subsonic ammo and my 6.8 SPCs outperform 300 BLK all the way around when we start talking about supersonic ammo. I’ve just never had a good reason to add a 300 BLK to my safe. Buuuuuut...I’ve got a complete lower hanging out in the safe with a Magpul UBR that’s just begging to become an SBR. I’ve also got a bunch of 300 BLK ammo hanging around that a buddy gave me when he sold his 300 BLK AR a year or so ago. Couple that with the fact that 300 BLK barrels seem to be the only chambering that’s not difficult to find in stock and maybe, just maybe, it’s time to put one into the stable. 10.5” or 12.5”? Anybody still have screaming deals on 300 BLK barrels or complete uppers?