[The_Ryujin]

I second tbrock1031 notion that it would help if you cleaned up that stat block a bit. I'm wasting too much brain power trying to make heads or tails of anything.

But to help out a bit here's some 4th ed. stats for ol' Rex's weapon load out.

GE GAU-8/A, 30×173mm

Damage: 6d×6(2) pi++ inc
Acc: 6
Range: 3,000/10,000
Weight: 618/1,784
ROF: 65!
Shots: 1,174
ST: 35M
Bulk: -12
Rcl: 2

Dmg is for the PGU-14/B APDU cartridge; the PGU-13/B SAPHE has Dmg 6d×5 pi++ with 3d+1[1d+2] cr ex. Note that RoF is fixed at 65. The original gun installation had RoF 35/70, but this was changed in the 1980s. I haven't been able to find official figures on the power need to run a burst with the avenger.

AGM-114 Hellfire

Damage: 6d×4(10) cr ex
Follow up 6d×16(10) cr ex
Linked 6d×6 cr ex
Acc: 6
Range: 490/14,000
Weight: 108
ROF: N/A
Shots: N/A
ST: 19M
Cost: $110,000

Note that it has both semi-active laser homing and a milimeter wave radar but I haven't found enough info on the radar yet to try to stat it.

100mW Free Electron Laser

Damage: 8d×12(2) burn
Acc: 18
Range: 350,000/1,050,000
Weight: 1.9 tons
ROF: 1
Shots: N/A
ST: 146M
Bulk: -10
Rcl: 1
Cost: $3,700,000

Notes: I treated that laser as having the super science options to get it to fit on Rex reasonably, it's almost 15 tons without it! Needs 322mW to power each shot.

It's gonna take me a while to stat out the rail gun so I'll come back to that later. The nuke it launches though wouldn't be that hard to stat. While it's never stated what yield it was I'm guessing it's around 200kt based on what the Metal Gear wiki says so I'll go with that and it was stated that is was a laser pumped "Pure fusion" bomb so it will have negligible fall out.

200kt Pure Fusion blast
Damage: 6d×28,000 cr ex
Linked 6d×26,000 burn ex rad sur (Note divide burning explosive damage by 2 times distance in yards rather then 3)

As for the weapons I did stat up, the Avenger is from Hans himself so it's pretty much official, the stats for the Hellfire was derived by me but was stated using pretty much the same rules used for shape charges in High-Tech (They're actually pretty easy to reverse engineer), everything else was from wikipedia, should work well enough for game purposes but if I have the time I'll try to find more trust worth figures later. The lasers stats were figured by using the Blaster and Laser Design article from Pyramid 3/37 with power requirements figured by.... "sources" and the nuke stats are also figured from "sources".

I hope that this helps.