Wastelander's Rebuttal, airsoft over/under shotgun pistol

The Wastelander's Rebuttal, is an airsoft over/under shotgun pistol which uses gas powered airsoft shotgun shells, the design originally used the goblin shot shells but those seem to be discontinued, you can however use the aps cam 870 shells in this thou they rattle a bit. If the included assembly picture is not enough I have an instructional video here. Have fun assembling and blasting.