Darzoni said:
The MagRail Minigun is listed as TL 15. The Mounted MagRail Minigun armor option is TL 14. The Mounted MagRail Minigun option also has another TL 14 listing...
Basically the question is what are the correct TLs for the Heavy MagRail Cannon Mounts? 15/16?
I would assume the book is (mostly) correct. A TL 14 version is available, but is too large to be carried by a person. That is why it needs to be mounted to artillery battledress. (page 93)
At TL 15, the magrail minigun has gotten small enough (through still rather large) to be carried and used by a person. (page 103).
The only problem I see would be the the advanced version of the artillery battledress mount version (page 93). It says "The TL14 version", but the normal mount is already TL 14. I would say the double mount version should be TL 15 (fitting 2 weapons in the same mount, also indicating that the weapon has been made smaller, just like the TL 15 man-portable version on page 103).
So that would be:
Magrail rifle - TL 13
Magrail carbine, pistol, single artillery battledress minigun mount (or vehicle mount)- TL 14
double artillery BD minigun mount, man-portable magrail minigun - TL 15
At least, that is probably how I would do it.
Edit: Central Supply Catalog has something different. The man-portable version is the same. The battledress mounted one, however, is bigger (doing 8d6+2 damage, though whatever autofire rating it has is left out) and is TL 15. Since its just a 3 barreled version of the standard weapon, I would say it still has an autofire rating of 12, just with more damage. Since CSC is more recent then Mercenary, I would say its version of the weapons were meant to replace the older stats.