DA50 (nonrestricted) uses the rear takedown pin of an AR, but the front is secured to the lower using a bolt that goes through an area that would have a magwell (if trying to attach to and AR15 lower). impossible to use an AR15 upper on a DA50 lower.
I'm aware of that, but since this is a belt fed, we do not need the AR15 lower magwell. And just like the DA50 had to get modified by ATRS to work with the their lower, I wonder if its possible to modify this upper to work with the ATRS non restricted lower.
Was lucky enough to attend the invitation only show because of my day job. Some wonderful toys with suppressors everywhere. Thanks for posting the pics.