Lower Receiver Compatibility: A .50 Beowulf upper can be installed on any AR15 lower. At one time Alexander Arms used Rock River Arms lowers, but now uses a different vendor. Bill Alexander told me that there are no brands of lowers that he recommends to use or not to use, but pointed out that the Alexander Arms' lowers came with ".50 Beowulf" printed on the side.

Well, that's where it got confusing - you didn't say "first PITA"....

damn...i know ur getting senile but it cant be so bad you fergot which one of us started giving u heartburn first

Chad???

<g,d&rlh>

hey pops..its the handsome eldest son