no gas mags should be dropped, GBB or GBBR. it's a surefire way to damage the feedlips and the base plate. you have to remember that a REAL STEEL mag weighs less than an AEG mag when empty, and in combat situations, the mags are dropped and left as garbage. we don't have that luxury in airsoft.
i have seen a fully loaded real steel mag (M4 metal mag) drop onto a dirt floor and had the tack-welds brake, and cartridges and the follower with the spring went in every direction.
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Weapons Technician / Gunsmith
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