Lancer L5AWM

[BufordTJustice]

Yeah basically every magazine will do that.

Bingo.

Every. Single. One.

[Diamondback]

Could it be that ejecting one or two on impact is a structural stress-release feature? I don't know magazines very well beyond the basic components and that they're supposed to keep the ammo comin', but in a former life I dabbled as an engineering student and such a thing would not be unprecedented. (For example, under some extreme conditions the WWII-era Grumman F8F Bearcat was designed so that if stressed beyond 7.5g the outer third of each wing would just snap off, leaving the inner, stronger portion to get home on.)

Not presuming to be an expert, just spit-balling a thought for possible consideration.