Play the game...explore, fight, etc. Why have someone tell you were something is? If you want to cheat..go look in the spoiler forum. Or get the strategy book.

I found one pair of Level 10 Diamond Backs in an old wreck of a ship drifting in one of the systems. I imagine you can find many more weapons and loot the same way.....by exploring around and looking for old abandoned ships. If you get close to an old wreck, it will show up as a red "X" on your Navigation map, making it easier to see......then you can set a waypoint to it to get there. Keep periodically checking your Nav Map for red X's. Then you have to figure out how to get the loot out of the ship, but the Mods here would consider that a spoiler if I tell you. Heck, they'll probably already think I spoiled something just by letting know you can find abandoned ships in the game.

i found two lv 10 "Guardian" guns in Omnicron Gamma (where the corsairs hang out), and two lv 10 "Blue Blaze" guns in the Gamma 7 system. if you're going to omicron gamma, make sure you're friends with the corsairs.. or you'll be dead before you leave the jump hole.

I believe that's the Omega 7 system, there is no "Gamma" system

I use the nomad weapons (class 10). They use no energy!
Go to Omicron Alpha, sector F4, and you will find alot of class 10 weapons in Outcast wrecks...