G&G Upper Receiver For G&G Blowback M4 Series Airsoft AEG Rifles (Color: Black)

"Very nicely built.... only one issue, it doesn't fit well in the abs plastic lower reciever, nor my g&p lower noveske... wish they had a lower for sale

"Very well built. But it doesn't fit on the Warthog model.

You can fit it, but requires a little work on the front pin hole.