Like I said I'm very fuzzy on the locations of the markings but I'm almost certain the barrel said Underwood. I'll call the shop that had it and see of its still on the rack and see what he can tell me about it over the phone.
Sgt. of Marines, 5th Award Expert Rifle, 237/250
1st Award Expert Pistol, 382/400
D Co, 4th CEB, Engineers UP!! OEF 21JUN-20SEP2011