I'm pretty sure the radio is from a PTE set maybe.. I am 99% sure I have some of them laying around from back in the day.
2 questions:
1: Why does the M2 have two ammo cans feeding from opposite sides of the gun? Brass catcher, maybe?
2: Where did that PRC radio on the M2 gunner come from?
It's a BBi radio that came in the red colored "Combat Gear" Elite Force accessory packs. I have one and I think it came in the pack with the tripod mounted TOW.
But being the stickler that you are, I wouldn't use it as a PRC-25 stand-in unless heavily modified. It is clearly a SINGCARS.
Ah ha! Makes sense now. Wondered where I got it from.
I'm surprised you can't find those weapon sets.. they were like $5 for two at once point.