Any advice for getting legendary/mythic gear such as the mark 4. Appreciate the help and tips. Keep it clean, public property 
Play. Mostly in Warzone Assault to grind. Finish all your silvers and then you open your golds.
Those items are available in gold packs, but following the strategy outlined in the many threads here, to start with silver’s will be much cheaper rp wise, otherwise you will open many a gold pack with uncommon emblems, armors, and other junk.
I bought bronze until it gave me my money back, then I bought silvers until it gave me my money back, now Im buying gold and it only gives me ultra rare and legendary
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> Play. Mostly in Warzone Assault to grind. Finish all your silvers and then you open your golds.
This.
Got all my good stuff by just going straight gold when I first started off, although not convenient or cost effective, I did get some good stuff. To each his own.