The hook and loop magazine pouches are constructed of heavy-duty durable fabric with hook and loop closure. See the chart below for triple mag pouch options and configurations. The 223/308 mag pouch has a hook backing and is designed to attach to loop panels in our bags and cases. Each hook backed magazine pouch also includes "D" rings for attaching a shoulder strap.3-magazine holder made in the USA Size Holds HL103 Three .223 pouches(two in each pouch, holds 6 total)orThree .308 pouches (one in each pouch, holds 3 total) HL105 Three AK47/7.62x39 magazines HL106 Two 50rd 5.7 magazines HL107 H&K UMP 45 mags HL109 Three pistol caliber extended/stick magazines- 33RD. Glock Mag