Going to be getting my CMMG 300 blk barrel in tomorrow and was wondering if anyone in the area possibly has a headspacing gauge set for this caliber. Want to be extra sure considering I'm using my almost 2k rounds used 5.56 bolt in this build and don't want to find out the hard way my headspacing is off (and of course you never know when fresh from factory barrel might have been reamed a tad too far). Anyone have a set I could come by and use, perhaps trade some beer or just cash for quick use? Or anyone know a smith who has a set for this caliber that can check this for a nominal fee (I would goto the one in Taylor but he has a $40 minimum and this is literally going to take all of 2 minutes to check). Preferably looking for someone on the North side of town.