sadly I bought one long ago at nearly $450...........should have sold it for the going rate of $600 as Ruben & othes ran out. Hell, looking back, i have a safe full of preban stuff i realy never used or had so many of, i should have taken advantage of the buying frenzy whaen it was still happening.
Great for full auto, otherwise too heavy for practical patrol. Also..........and very important, is the rounds inside rattle like hell! No stealthyness with this mag!
From a fixed position, a 100 round dump is a fun thing....................bear in mind the heat really can ruin a barrel without proper cool down time between strings.
All issues aide, I'd rather carry (patrol) with two 30's on the gun via magclip, and 2 spare 30's elsewher on my body, as in a mag pouch. Truthfully, a mag change is something you need to practice regularly, from behind cover or even on the move.
My 2 cents
Andrew