Item Description
SIG Sauer 556 AEG Mag, 400rd Magazines will fit in and are compatible with: Sig Sauer 556 (item # 28907) Mod4s/Mod16 AEGs High capacity magazines for electric guns are a must for any serious airsofter. The high-cap magazines look exactly the same as the standard magazines but can hold up to 8 times the amount of ammo. Easy to fill, just pour in 400 rounds through the top hatch. Easy winding spring dial on the bottom keeps tension on the ammo for smooth feeding.