COD: Blog Ops: HK21

Our fourth weapon is the HK21. This weapon is one of the default weapons in the game.
This weapon is known for its high damage and fast firing rate.

Shots to Kill: 3 Close/3 Far
Rate of Fire: 750 rounds per minute
Magazine Size: 30 Normal/60 Extended
Reload Time: 3.75 seconds

Secondary:

I suggest using China Lake as the secondary weapon. HK21 is mostly used in objective games, China Lake will help a lot for group killing or killing players near their objective.

Attachments:

Primary Weapon: Extended Mags is the perfect fit of attachment for this weapon. It will increase the HK21's magazine size to 60, allowing you to be more aggressive without worrying about reloading every time. If you are using the Warlord perk, I suggest you use Extended Mags and Red Dot Sight.

Perks:

Perk 1: I suggest using Lightweight. Using the HK21 will make you move pretty slow so a little boost of speed from Lightweight might help. Another good perk for this class setup is Scavenger or Flak Jacket.

Perk 2: Hardened just help your weapon penetrate more on objects, but the pro version of this perk is not that bad. The reduced flinch effect is very useful.

Perk 3: Tactical Mask will give you protection from Nova Gas. The pro version of this will make you almost invincible against Flashbang and Concussion. Another good choice for this class setup is Marathon.

Equipment and ETC:

For Equipment, I suggest using Jammer. This is extremely useful if you don't have the Hacker or Flak Jacket perk. Always plant a Jammer before entering buildings, so you could disable equipments like Claymore and C4's.

For Tactical, use Flashbang. It blinds your enemies completely making them completely defenseless, but effect only lasts 3-4 seconds so you have to be fast and aware of where the affected enemies are.

For Lethal, use Semtex. You do not have to worry about throwing grenades at campers inside a room because this class is not for rushing. Semtex is good for objective games like Domination, Demolition, and etc.

Killstreak Rewards:

SAM Turret is useful with this class setup especially if you do not have any launchers equipped. It will destroy Spy Planes and other aircraft automatically. Be sure to put this on a spot that it is least noticeable.

Blackbird is very useful for this class setup. It helps a lot when you see where your opponents are and which way they are facing so you could plan a good attack strategy.