use frag for gernades, they have far better blast radius, cook them for 3 sec so they go off within 1 sec of getting to wherever your throwing at, not many throw gernades back anyways i use smoke gernades as you can go in to a place and not be found, or have the affects of tabun, and i use special gernades for close up combat anyways and you dont want to run through tabun... also for mp i find silancer far better then round drum as mp40's damage is very high and imo mp is most widly used gun in online so should have no problem getting more ammo also for perk 1&2, i use slight of hand and steady aim for shotgun classes as 1. u need to reload alot, 2. you dont really use ironsights on it finally, ill add tif or maybe hyt?