Achilus assault ogryns

By Professor Tanhauser, in Deathwatch Rules Questions

In achillus assault one force is listed as using orgyns in it. They are listed as having either pure melee weapons on some carry a heavy stubber ranged weapon. The stats for them don;t give any skill for using ranged weapons, so if I use one with a heavy stubber do I consider it to be unskilled with the weapon or give it the minimum skill in SP weapons to use it?

FFG often forgoes listing the Weapon Training talents on NPCs. Its the general consensus that all NPCs have the training to use any weapons listed in their profile.

Thanks.