This is the Hexmag Series 2 AR-15 10/20 10-round magazine in .223 Remington and 5.56x45mm NATO.

Known as the Hexmag Shorty 10/20 AR-15 magazine, this is a 10-round capacity in a 20-round body – perfect for bench shooting (or when you just like the look of a 20-round mag).

Featuring the classic PolyHex2 body material, high-vis orange follower, steel wire spring, removable floorplate, and Hexmag’s tried-and-true hexagon grid.

Also, this magazine supports other calibers, such as .300 AAC Blackout, .458 SOCOM, and .50 Beowulf.