Caleb Giddings of Gun Nuts Media did a torture test last year on a Troy Battlemag. I have seen some torture tests of Troy Battlemags but somehow missed this one. I thought it was rather impressive how much damage this magazine took and it still functioned.
You can find Troy Battlemags on sale rather often. A local store, Field and Stream, has them on sale. A 3 pack for $14.97!!! That is pretty darn cheap.