This will not work with my dd ambi lower - Radian Weapons Model 1 Complete Upper Receiver

On my DD ambi lower, this upper will not fit. The forward assist hits the right side bolt catch. So I can’t even line up the takedown pin. If you look at the Radian ADAC-15 lower, the bolt catch on the right side does not sit up like a typical one. So it won’t even mount to my lower.

Now I’ll have to buy the ADAC-15 lower and build it. Not the end of the world, it will get done. But had I known before, I would have sought out the Model 1 complete rifle instead.