Just picked this up last week and have allot of plans for it. It's a G&P USMC SAM-R with a 3 shot burst mosfet and a madbul 6.04 ver.2 tightbore, not sure of the rest of the internals.
I'll be updating this as I get the stuff together!
If anyone has pics of their G&P USMC SAM-R please post them!