Made my decision today and went and picked up my first AR lower. I chose the MEGA "Gator" lower after comparing it side by side with some others such as Stag Arms. The machining on this MEGA is awesome. Clean clean clean! No tool marks at all anywhere. The magwell is nicely broached with no marks and the magazine fits nice and snug with no slop like it did in the Stag. The reciever is already milled deep enough to accept the full-auto sear (not that I will use that).
I am very excited about this of course! Already assembled the lower with the exception of a buttstock kit which I will get next weekend along with a MEGA upper.
The assembly was pretty much a piece of cake. The hardest part was installing the roll pin for the bolt catch. I did place a small scratch on my reciever on the bolt catch boss where the pin goes in. I hate that!
If you are not familiar with MEGA, here is a link to a review of the
MEGA "Gator" AR-15 Lower