Guys, so I heard that mp40 is upgradable to 8 DMG and my friend said that he thinks that I have to repair the weapon in good shape (not perfect shape but good) then it should be upgraded, I tried that and nothing really happened. The gun just turned perfect shape and I didn't get 8 DMG. Just 7 still. PLEASE!!!!! I would love to know how to upgrade a weapon please guys!

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