Quote Originally Posted by 26 Inf View Post
Do us a favor and let us know how it works out when you get the feed ramps matched up/

I swapped the upper receiver out for a BootLeg Enhanced LW and the M4 ramps match up without any lip. Very smooth transition.
I function checked at the range and once I got the gas tuned, Viola - no more misfeeds using those same 20 round mags