Whats up guys i have seen a couple of you trying to find out what level you unlock everything so i decided i would look through videos and forums to try and find out for you all and post it here.

Warning this may not be 100% accurate but this was the best i could do i couldn't find the levels for some of the guns however i do know what order you unlock things in so if i don't know the level i will put a (*) next to it.

Assault Rifles:
MTAR level 4
Type 25(*)
Swat-556 *
Fal OSW Level 22
M27 Level 31
Scar-H Level 40
SMR Level 46
M8A1 Level 48
AN-94 Level 55

SubMachine Guns:
MP7 Level 4
PDW-57 *
Vector K10 Level 16
MSMC Level 28
Chicom CQB Level 37
Skorpion EVO Level 46

Specials:
Assault Shield Level 34
Crossbow Level 25
Ballistic Knife 49

Sniper Rifles:
SVU-AS level 4
DSR 50 level 7
Ballista Level 43
XPR-50 Level 52

Light Machine Guns:
Mk 48+QBB LSW(available when first creating custom classes)
LSAT level 1
HAMR Level 37

Shotguns:
R870 level 4
S12 *
KSG Level 34
M1216 Level 52

Launchers:
Smaw and FHJ-18 AA (Available when first able to create classes)
RPG level 40







Pistols:
Five Seven and Tac-45(Available when first able to create custom classes)
B23R Level 19
Executioner Level 31
Kap-40 Level 43




The attachments and Camo for weapons are unlocked through leveling the weapon up. It's similar to the system in where you level the weapon up for camos and attachments. Apparently Your Knife can also have Camo


Perks:

Perk 1:
Lightweight+Hardline (Available when first creating class)
Blind Eye level 8
Flak Jacket Level 32
Ghost Level 55

Perk 2:
Toughness(Available when first creating class)
Cold Blooded *
Fast hands *
Hard Wired Level 26
Scavenger Level 44

Perk 3:
Dexterity and Extreme Conditioning(Available when first creating class)
Engineer Level 14
Tactical Mask Level 20
Dead Silence Level 38
Awareness Level 50

Lethals:
Grenade and Semtex(Available when first creating class)
Combat Axe Level 17
Bouncing Betty Level 28
C4 Level 41
Claymore Level 53

Tactical:
Concussion and Smoke(Availiable when first creating classes)
Sensor Grenade Level 11
Emp Grenade Level 11
Shock Charge Level 23
Black Hat Level 25
Flashbang Level 29
Trophy System Level 35
Tactical Insertion Level 47

WildCards:
Perk 1 Greed(Available when first creating class)
Perk 2 Greed*
Perk 3 Greed Level 11
Overkill Level 16
Secondary Gunfighter Level 19
Primary Gunfighter Level 22
Tactician Level 25
Danger Close Level 28


If you have the game feel free to give me a reply with the level you unlock things and i will edit this like i said before i am not claiming this 100% accurate but it was the best i could do