Hexmag AR Rifles 223 Rem/556NATO Series 2 HEXMAG 10 Round 30-Round Body Magazine Black. 56x45mm NATO .223 Remington Gun Make: AR Platform Gun Model: AR-15 Package Contents: Hexmag AR Rifles 223 Rem/556NATO Series 2 HEXMAG 10 Round 30-Round Body Magazine What firearm models does the manufacturer say Hexmag AR Rifles 223 Rem/556NATO Series 2 HEXMAG 10 Round 30-Round Body Magazine is compatible with? The manufacturer says that Hexmag AR Rifles 223 Rem/556NATO Series 2 HEXMAG 10 Round 30-Round Body Magazine is compatible with AR-15Hexmag MGHEXHX1030-AR15S2-BLK: AR Rifles 223 Rem/556NATO Series 2 HEXMAG 10 Round 30-Round Body Magazine Black