I'm not much on running Pred Mark in the Dark Zone, but this build is what I take in there from time to time. As with any P.M. build, it's all about crit, crit, crit. Spec into as much Critical Hit Damage and Chance as you can as the bleed effect and damage over time is what you are aiming for. With just over 4K Firearms, a Pred Mark bleed build is not about raw DPS, but rather the bleed drain over time and with over 9K stamina, the bleed damage over time reaches insane levels. Spray and Pray in the general direction of your target and aim to connect with 10 consecutive shots. Once applied the bleed damage is tremendous and will cause another player to stop combat and activate healing to counter the effects. It is while they are cleansing the bleed effects that you can attack over and over until they are eventually downed.