The Perks Setup

Perks:
Fragx3 - Great for spamming (especially in maps like Bog, Wet Work and Shipment). Your objective is to kill as much as you can as fast as you can. If you see a red dot in your UAV then throw a few grenades in that direction and you get a good chance of killing that person. Throw your grenades higher for more distance.
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Bandolier - If you find yourself running out of ammo quick because of all that spray and pray fire then take this perk. This perk is also great for the Overgrown map where it is easier for opponents to avoid grenade spams and you don't need to keep on looking for guns and ammo hidden in the grass fields when out of ammo.

Stopping Power - This will increase the damage of your MP5 and this perk is available at the beginning. You can replace this with the *Double Tap perk but you run out of bullets quit faster and you wont find much difference in your damage output with the Stopping Power perk plus you will have more bullets to spare for the rest of your victims in the vicinity. Besides the MP5 already has a great Fire Rate so I will stick with Stopping Power perk.
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*Double Tap - Doubles your rate of fire meaning for every single hit you make you get double the output. You also get a slight better chance of a head shot as your bullets cover more area of trajectory. Great for 1 on 1 battles but you tend to loose ammo quicker

Martydom - Everyones most hated perk. Great for small confined maps. You want revenge on your killer? This is how you do it. Free kills with Zero effort. I replace this with the *Extreme Condition perk on bigger maps (Overgrown, Ambush) because there is more room for your opponents to sprint away.
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*Extreme Condition - Sprint till your hearts drop. Great for chasing down victims around big maps. The MP5's only weakness is the range. In small maps this is not a problem as most battles are in very close proximity but for larger, wide spaced maps you need to close the gap with your opponent to be more effective. Also great for running away from enemy fire and martydom.