VERY useful info, thanks!
So, if I understand correctly, those mags would work fine with (1) a bullet guide and (2) I may or may not have to remove some metal tab at the rear of the magwell?
The linked mags are about the same price as Surefires (black also available for same price). I already have a bullet guide kit but haven't installed it. Since price is basically the same for me, which ones (Arsenal vs. Surefire) are a better bet in terms of reliability and durability?
If there's a better source for the Arsenal mags - either better price, or same price but they support this we