The Echo1 FAT M4 Hicap Magazine is an 850 round hicap magazine that fits in any M4 or M16 airsoft rifle. The wider body of the Echo1 FAT Mag is reminiscent of the Surefire 60 Round High Capacity AR magazines used in the IAR.
Echo1 uses metal construction for their M4 FAT Magazine for durability. These magazines are the width of two M4 STANAG magazines and will fit double M4 mag pouches. Whether you're building an Airsoft M27 IAR replica or just wanting the highest capacity magazine you can find, these mags are ideal for keeping you loaded and in the game.
Echo1 FAT Magazine M4 Hicap Features:-850 Round Capacity
-Double Size Hicap Design
-Largest M16 High Capacity Mag
-More compact than Drum Magazine