Question: how to get khvostov 7g?
Answer: Kill all the enemies on board and look for a loot chest in the rear right corner of the ship. Open it to get the Khvostov 7G-OX schematic. Take the schematic back to Shiro-4 at the Iron Temple to get the We Found a Rifle quest, which tasks you with finding 10 Manual Pages and three Khvostov Parts in The Plaguelands.