The Sons of Liberty Gun Works SOLGW Branded AR-15 .223 / 5.56 30-Round Magazine is a duty-grade AR mag designed to ensure flawless operation and reliable performance under extreme conditions. Compatible with standard AR-15 platforms chambered in .223 Remington and 5.56 NATO, this magazine features a robotic-welded 410 stainless steel body with Post & Hole locking technology for unmatched strength and shock, crush, and crack resistance. Plus, the anti-tilt follower and Everflex 17-7PH stainless steel spring provide flawless feeding performance in combat and tactical environments.