Az, I'm bring my lm4 on friday game FYI
LM4....Direct impact to the bottom is fine from shoulder, hits to the top will break feedlips.
WE M4...Direct drop will dent the bottom to the point baseplate removal becomes difficult, drops to the top will break feedlip (much easier than LM4)
MP7 Direct drop to bottom will break the floorplate, and spilling the spring, etc out.
In general GBBR mags are not meant for drop -especially if you do those stupid costa reload. Tactical reload is the way to go.
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