• No sight makes you scope faster

• Armor makes you run slow and it doest really do anything like in cs

• makarov is the lightest pistol you can get

• recon class (in ins) are set as entry fragger in cs

• left click flash - mid range (short cook time)
  right click flash - long range and fast throw (longer cook time)
  middle click flash - underarm flash (mid cook time)
  
  also if someone standing in front of you when u throw underarm flash even you are not coverd you wont be blind but they will even the flash isnt facing them.

• i choose suppressor over foregrip, it doesnt really change the recoil only change your pov make it smooth.
  suppressor is a sneaky peaky way to go

Map knowledge is very important. To play the game, you will have to know the Map

ex.

• Where your enemy possible camping at.
  
• Where is the hotspot for C4 or AT4 (IDE&RPG).
  
• How to throw a nade on different map(place/obj) in different way.
  
• How to and where to throw it.
  
• Explosive timing. (when to explo C4, throw a frag or shoot a RPG).
  
• Where you might need flash.
  
• The easy and safe way to get on obj.
  etc....

Specialist · Rifleman · Breacher · Designated Marksman · Support · Sniper · Recon · Engineer · Demolitions · Grenadier · VIP

So, let's get start with class knowledge
My fav weapon on Security Team
MP5K, UMP, makarov, flash and frag

Specialist

one of my fav class
M590, MP5K, Mk18,UMP

• (MP5k is one of my fav weapon to use, it's very good on short or mid range map, its 9mm ammo which makes it very light, so it also means you can be able run very fast with a MP5 in your hand!
  
• a high demage class, also functions as a versatile close quarters combat expert. The specialist class can be considered to be a mixture of the recon class and demolitions class, as the class has access to suppressors, SMGs, and incendiary grenades, but lacks the long-range capabilities of the recon class and access to the heavy explosives of the demolitions class.

Rifleman

M16A4, L1A1 SLR, M4A1.

Breacher/Engineer

Primary M590, MP5K, Mk18
Explosive M84 Flash, M18 Smoke, M67 Frag, AN-M14, C4
Learn to use your class skillet! C4 is super useful for clear out a close area obj

Designated Marksman or sniper

M16A4, M40A1, AC-556, L1A1 SLR, M14 EBR

• A team doesnt really needs 4 four snipers on every map, DM or sniper will need to know when is the time to snip and when resupply get on obj. Be as a DM or sniper you can only snip people thats not enough, you are the "viewer" for your team, It basiclly means you will need to know where and whats going on, where is hot spot on the map and talk with your team. also learn to check your map (N key, i set it to V key its easy for my finger to reach), where you teammate dead.
  
• For weapon choose, M40A1 can give you a one shot to kill an enemy, if you are good with that i will like to use M40A1 as my weapon. For noob, you will need to pactice with something like M16A4 and EBR first.

Support

Primary Galil SAR, M14 EBR, M249
Learn to use skillet for your class, so choose M249 and yes you won't miss you enemy even you don't know how to aim the head.

Recon

AC-556, MP5K, M4A1, UMP-45

Grenadier

M16A4, M4A1
My supply : Up to what map i m playing.
Being this class is VERY IMPORTANT to know where and when to shot your AT4, help your team to clear the obj, DO NOT CHOOSE THIS CLASS IF YOU DON'T KNOW WHAT YOU ARE DOING!
Also you can switch AT4 to C4 when you need, but AT4 has a great thing is it can get a boom and shot very to the point and BOOM you enemy in a long distance, and if you shoot at the right place it usually very rare to not kill your enemies.

VIP

Secondary M9 Suppressor and Flashlight
Armor Heavy Armor
Vest Chest Rig
Explosive Flare Gun Night maps only

Specialist · Militant · Fighter · Sapper · Sharpshooter · Machine Gunner · Sniper · Scout · Bomber · Striker · Rocketeer · VIP

• Personal, I pretty much only use AKM or Sterling for insurgent side, unless i got a Machine Gunner or sniper, a lot of people thinks Sterling is a ♥♥♥♥♥ weapon, but the truth is Sterling is a low demage weapon but very light and it shots fast. My KDR when I rush with a Sterling on ambush mod is like 7.19+- ,AKM 8.33+- but for sure some people don't like the sounds of this weapon, and i can understand becuase I don't like it too :3
  
• Some people asked: What's the different than AK-74 and AKS-74U?
  The different is AK-74 is more snippy wallbangble bcuz its longer and heavier than 74u; AKS-74U is light and quicker to reload, I dont use any sight while I'm with a 74U or ak74
  
• You should always know the map and what kinda of weapon you are going to use.
  
• MP40, the worst weapon i ever seen, very low damage but also the lightiest gun you can get, I have no idea how a pro play on USMC had 16:1 KD with this weapon D:

So my supply looks like this for most the time:
Specialist, Militant, Fighter(ON PUSH)
AKM + Foregrip + AP ammo + kobra sight + 2 frags + 1flash + no armor
or
AKM + Foregrip + AP ammo + kobra sight + 1 flash+ 2smoke + no armor
Sterling + AP ammo + 2 frags + 1flash + no armor

Sapper/Bomber
Makavor + AP ammo + extended mag + IDE (smoke if u have supply slot)

Striker · Rocketeer
Makavor + AP ammo + extended mag + RPG (smoke if u have supply slot)

Scout
Sterling + AO ammo + 2 frags + 1flash + no armor

Sharpshooter
Mosin + 7x + AP ammo + smoke + makavor

Flash can be very USEFUL if you know how and when to use it.

• Easy tips left click or right click.
  
• Left click you can cook you flash but don't cook i you don't know how to timing a nade, I mass up sometimes too.
  
• Left click also gives you more flash area from my experience, you might give flashed by yourself, but right click it won't flash yourself if you throw it right, I won't use middle click for flash
  
• Flashes can be used in a lot of thing.

Originally posted by author:

ex.
Ambush rush and flash top of B point works everytime, also it can flash enemy camping on A point sometimes too.

Flash is my fav nade to use 10/10 and 24/7

• If you click you nade before you die, it will expol after you die
  
• Always check you map and listen to the steps, reloading sounds, if enemy right next to the wall you can alt walk away and change you spot to throw a frag.
  
• Know the map, and timing, play more, you will know when and where enemy going to rush, and throw it.

• This is up too what map are you playing, Personal don't use smoke so much except throw it for teammate for rushing and cover.
  
• Smoke can cover you also it can blind you, it might help you sometimes also help enemy to see you in the smoke.
  
• Also they can throw frags into the smoke.

(I usually flash the point not smoke the point, cuz enemy can see you onn the point but you can't see them, and you can't clear the point.)