My first post on these forums, figured i should probably sign up given i'm an avid yahtzee viewer, then spy a thread about gunnery? Intrigue...
Anyway, onwards!!!
Primary: MP10, supressed, anyone who's read Tom Clancy's Rainbow Six will know what an utterly epic weapon that is.
Secondary: Reservist Rifle from Fallout 3. If you've not had the pleasure, find the church where Drifter lives.
Sidearm/backup: Skorpion pistol, the original, not the 9mm version, the 9mm is too chunky but the ZK 383 at 7.65mm with a simple 10 or 20 round box would fit nicely in my grip when my MP10 goes *clack* and there's still hostiles.
CQC: Can you ever go wrong with the knife from MGS4?
Explosive: Small pouch of unbound plastic explosive and half a dozen detonator pins, enough to sow confusion and maybe knockdown a small building if placed correctly.
Grenade: I can't throw for crap so i'll go for them old russian stick bombs with the stake and tripwire built in, if you've played sniper elite you know what i mean.
Other: ...Suit of space marine power armour please

Guess not, how bout some light kevlar on limbs, strengthened carapace on chest and a tactical helmet/ballistic goggle combo, that oughta keep me alive when most you other people have grabbed your guns and seem to be running round in the buff lol