That's a great idea. If you don't have a quality AR yet, you certainly will like it when you get one. Focus on the 5.56 right now, as .300BLK ammo is beyond scarce in any form of bulk quantity. I was going to get a 9" .300BLK upper for one of my SBRs and then reform 5.56 brass and reload my own, but I can't get any reloading components (and likely won't for 6-12mos).
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