Originally Posted by clr8ter
Uh, is that a standard AR lower? If so, where does the mag go? It seems to me a 50 BMG would never fit up the AR mag well.....
It's a POF multi caliber lower. If you are not familiar or haven't seen one in person they are nearly double the wall thickness of a normal AR lower.
The magazine is a side mount. If you look closely on the picture you can see. I will take a picture tonight so you can get a better look.
In addition I took a case hardened steel promag 5 round 5.56 case shaved it down and filled it with two-part 80A shore polyurethane for recoil absorption.