IMI Defense G1 M16/AR15 5.56mm Rifle Magazine 20 Rounds FDE. 56 20 round Polymer Magazine s a battle proven highly reliable lightweight modular magazine made of durable high end fiber reinforced polymer. Specifications for IMI Defense G1 M16/AR15 5.56mm Rifle Magazines: Manufacturer: IMI Defense Fabric/Material: Polymer Magazine Capacity: 20 Round Caliber: 5.56mm Gun Make: AR Platform Gun Model: AR-15 Features of IMI Defense G1 M16/AR15 5.56mm Rifle Magazines Proven reliability Highly durable material Anti tilt follower Perfect fit in mag well. AR18 magazine catch compatible Package Contents: IMI Defense G1 M16/AR15 5.56mm Rifle Magazines What firearm models does the manufacturer say IMI Defense G1 M16/AR15 5.56mm Rifle Magazines is compatible with? The manufacturer suggests that IMI Defense G1 M16/AR15 5.56mm Rifle Magazines is compatible with AR-15IMI Defense IMI-ZMG02FDE: G1 M16/AR15 5.56mm Rifle Magazine 20 Rounds FDE