Weapon attachments when will it be addressed?

[RAMBO2k9]

2 Separate suppressors such as the wrapped suppressor and 6ku suppressor they literally have the exact same stats and attributes yet unlocked at different levels depending on the gun.

then there’s 2 heavy suppressors you get on  on the ac42 and k30 which deals less fire power than the 6ku and wrapped suppressors yet they are heavy suppressors again both heavy suppressors you get on both guns do the same thing statically.

then there’s the muzzle break and compensators again same thing only difference is vertical or horizontal differences yet I cannot tell if they even work when I use them.

then there’s the under-barrels the rattlesnake light grip, big light grip and cobra grip and leg grip, they all do the same thing statistically yet I don’t feel any different when equipped I pretty much use it for cosmetics.

when will Dice address this and have they even confirmed they are aware of this?