This is an original OEM Top Cocking Upper Receiver complete with the reinforcement ribs and Cobray© Logo. The only modification from the original design is the inclusion of the hole for the barrel roll pin in the trunnion. We found a limited and old supply of the original sheet metal body and front sight and welded in our trunnion. This upper will fit and function on Full and Semi Auto guns. It will also fit on the Poison Sumac 3D printed lower receiver. Please tell us in the comments section that this will be used on a 3D printed lower and we will relieve the bottom of the sheet metal so that the hammer will function appropriately. This item is a custom order item, please allow at least two weeks for shipping.
Note: Lower receiver and bolt assembly not included.