POTD: How to Separate Your 300 Blackout Magazines from Others -The Firearm Blog
Warzone] I'm telling you guys, don't sleep on the M13 with .300 Blackout 30-round mags. This is my go-to for solos and very late drops in team games. Just got 2 solo
300 Blackout Magazine Marking Bands, 10 Pack 300 AAC BLK 7.62 X 35 mm - Walmart.com