It's the same as with HKs, the magwell is shaped differently so you need EMAGs.Guns & Ammo magazine ran a test on that rifle a few months ago. They DID mention that some AR magazines wouldn't work, especially the ones that have dust lips on them. G & A also mentioned that USGI mags work just fine in that rifle.
I think it'd look pretty sharp with a magpul PRS on it!
Do you think the brass ejection is lefty-friendly enough?
That looks exactly like a Super Nova Tactical stock, it lines up good with the ghost rings on the shotgun but I could see it being awkward for optics, especially if there was any hieght to them. I wonder why a 20inch bbl why not 18.5? looks a little odd sticking way out there in such a sporter contour even a 16.5" bbl with an integral compensator to make the 18.5 would have been a bit better in appearance then that skinny 20 IMO.
You can get it shortened to 18.5" and threaded.
With a shroud. Not a fan of the pencil thin barrel.



























