Last school for the minigun I attended was for the old GAU2B GE version . We have armorers that have been to a few schools for the new dillon versions , not sure which or where !
I will ask !
I will ask !
Long Mountain's M134 3-day course runs around $1200, last I checked. Everyone I know who's been through it says it's a bargain. [I checked, it costs $1195 now.
Gratuitous 15-second M134 burst vid: M134 Skool Shooting"
FYI, they've got a 2-day course for the M60 *pig* MG as well, at $450.