Best pvp roll is outlaw, perfect balance, luck in the chamber. Best pve is outlaw, field scout, crowd control. Luck in the chamber, crowd control, and final round can all proc for 2 shot kills. Third eye and zen moment are also alright perks. The best rolls compensate for at least 2 downsides of the gun. If you are trying to buy for a pve lash you need field scout. Anything that increases the stability or reload is what you aim for. Steer clear of clown cartridge and mulligan though. If either of them show up just re roll.