Originally Posted by Mossy Man
I have a 10-round ASC magazine and it runs well.
The best part of the M&P15 Sport is the barrel
I just bought a 10 pack of ASC rebuilds from Cope's to make into 10/30's... 69.99 with free shipping (79.99 total due to "rebuild" fee"). Even with the dollar per mag fee for rebuilds I am ten bucks cheaper than PSA. I hope they run well.