Here's pics of two of my favorite pre-Diaclone guns--Robo .44 Magnum and the .357 Robo Highway Patrolman revolver:

The good.....and the ugly. Sorry folks, Megatron (the bad) is out on account of business.

I guess they didnt know what to do with Mr.Pistol's torso huh?

OMG THOSE ARE AWESOME!!! But I bet they're insanely expensive. Isn't one of their names something like 'browning' or something?

You should see the Machine Robo Pistol...not the laser, which I think is cool. I have one, it's in storage somewhere deep. Unique to say the least, a tad better then the Highway patrol gun (the ugly).

Note the head to that gun was borrowed from a Microman toy. Green guy that came with a robot (same head as 357), have that too somewhere...

The Gobots version of Megatron, a glock I think, has a clip that slides in and out and holds the amo, each has a robots face on it... the gun does not load them and fire, instead it spits them out the side and you have to lock it in place and then spring loadded fire. Arms are like Stacks, the big truck, all square and folding, and the head is kinda cool, with guns etched into the sides of his head.

My magnum, I got from a botcon, the Japanese dealers named him Treadshot, after the actionmaster...however the character looks more like the highway patrol bot.