This looks like a 6094. If its a replica then they wont have used it. But if it was made by LBT then its a very nice carrier (maybe look for a label there might be one). If its real Idk if usmc use it, but Im pretty sure devgru use it
Got a ptw crane stock from someone, but without a butt plate
If you have a ptw crane stock buttplate you want to get rid of, Im looking to buy one so please message me