Hey i didnt make these, got them from some modelling sites like turbosquid, but they came with no textures so i did a paint/google image search for em'
Coke Grenades :
>> Download Coke Grenades <<---------------------------------------------
Medieval Axe : (Executioner?)
>> Download Medieval Axe <<---------------------------------------------
Rocket Launcher :

Yes, no textures, 3dsmax was being a bitch and wouldn't put it ingame.
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Unreal Tournament Style Rocket Launcher

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Minigun :

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'Heavy' Gun :

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Ill be uploading them once I get the textures working.
Chinese Style Sword :

I textured it, just not showing up ingame.
Here it is in 3dsmax :

EDIT: And if anyone finds a working Gears of War model (any character) Please say, i can only find gmod versions which dont like 3dsmax