Quick and Dirty mecha weapons!

Yet again, I have returned into my mecha mood, after prolonged time without any mood at all. 

And the first thing I decided I would do in this mecha mood of mine, is give some more advice on mecha weapons, as oversized handheld weapons are a persistent thing in mecha fiction. At least that part of mecha genre that doesn't treat mecha as walking weapons platforms (a.k.a the fun one, haha got`em!) 

So, you want your  mech to carry a very-very big assault rifle, or a pistol, or something else. 
If you remember my abrupt and very rough post on how I run mecha, there were already some details on scaling up weapons with all the LTC, and stuff. But today, we're gonna simplify and streamline this process.

The simplest way to do mecha weapons, is simply to use the stats listed in different weapon tables, but tack on a "d" on the damage and range (repeating from that one post, we're gonna use 5-second turns and 10-yard hexes). 

Weight of the weapon system is yet another very simple thing here. Follow the Handheld weapon battery advice from SS4 and have them weight 1/20th of mecha weight. Assume, that gun contains the amount of ammo reccomended for such size and variant of weapon, or maybe more, if you feel like it. But not too much!

So, If using this system on some weapons - we could very well get this table here!

Most of these weapon assume being wielded two-handed, but can be used one-handed.

Calibeer numbers are listed for those, who want to allow variant warheads for mecha weapons.

Now, the guns are not the only kind of weapons you might want to give your mecha. Moreover, you may want to not give any guns to them. Maybe you have a setting, in which there's no guns at all!

Then, you're in luck, as Melee weapon constucrion is as simple as gun upscaling.

For damage and range purposes, you can just treat normal weapon damage and range in d-scale, yes. And minimun ST should be the standard ST for the mecha hull size.

For smaller and bigger mecha, treat SM+5 mecha as SM+0 and scale weapons for different sizes accordingly (a.k.a SM+6 mecha weapons are treated as SM+1 ones and stuff)
Apply this to everything but weight and cost. Melee weapons cannot be bought as an integral part, so they always count as encumbrance.

This makes mecha weapons easier to make and scale, and removes all those large numbers that come with very high ST.