2604 Sunday Gunday! Diamond back AR-15 pistol chambered in 5.56 with a .300 blackout upper switchout. (media.patriots.win) posted 278 days ago by Fuckthecommieleft 278 days ago by Fuckthecommieleft +2604 / -0 87 comments share 87 comments share save hide report block hide child comments Comments (87) sorted by: top new old worst You're viewing a single comment thread. View all comments, or full comment thread. ▲ 2 ▼ – bobbybadass 2 points 277 days ago +2 / -0 Keep those mags separate!!!!!! Touching off a .300blk pill in a 5.56 upper will get ugly FAST. I use FDE mags for 300blk, everything else 5.56. Makes it harder to do something stupid. permalink save report block reply
Keep those mags separate!!!!!! Touching off a .300blk pill in a 5.56 upper will get ugly FAST. I use FDE mags for 300blk, everything else 5.56. Makes it harder to do something stupid.