Ok Karl how's this for equipment: H&K MP-5 7lb., Glock 17 2lb., Berreta 92f 3lb, Masterwork combat knife 1 lb, snow-camo combat fatigues 3lb., light weight snow-camo thermal jacket 2lb., Mesh vest 2lb, oversized range pack 3lb, Military grade walkie-talkie with throat mic 1 lb, Flash goggles 2lb, Medical kit 5lb, Surgery kit 5lb, 4 blocks of C4 4lb, 2 timed detonaters 1 lb, 2 radio detonaters 1 lb, pistol suppresor 1 lb, 3 day's worth of MRE's 3lb, 4 clips of 9mm (for the glock) 2lb, 2 clips of 9mm (for the Berreta) .5 lb, 3 clips of 9mm (for the MP-5) 1.5 lb. Total: 50lb
The only things I added that weren't on your basic list was the pistol suppresor and the oversized range pack. I thought I should add the suppresor in for the pistol because of his branch of the service if that's not ok it can go. I put the range pack in so he'd have somewhere to put his surgery and medical kit instead of them hanging off his vest or something weird.
I have several things from the optional list because they are his area of expertise (explosives and the medical kit's) hope that's alright. The only other thing's are having the berreta and the glock and the clips of ammo, I didn't know how many I was supposed to have so I guessed.