Bought this off Cody a while back looking to make it into the Carbine seen here. Was looking to make something that would fit into a backpack, as well as something I could sneak out back to hit the occasional rat on the bird feeder. I originally had a 6.5 inch Rocker1 moderator on it, but that made it too long to squeeze into my pack. So, I designed and printed my own internals, put them into 40mm aluminum tube, and put some carbon fiber wrap on it. Also printed a picatinny tri-rail for a grip and red light.Still need to chrony it, but it’s dead on at 20 yards with 18 grain JSBs, and it’s already dropped a couple of rats. I love it!