Best CQC(Close Quarters Combat) Weapons
Heckler & Koch G36C
G36C is my favorite on this list, and probably it is the best civilian assault rifle nowadays. It is a 5.56×45mm German assault rifle with the gas-operated system and 30-round detachable box magazine or 100-round C-Mag drum magazine. Usually, it is used by police and special tactical forces.
LWRC M6 PSD
LWRC M6 PSD is a close quarters tactical carbine based on an MP4. It has short-stroke self-regulating gas piston system and ultra-short 8-inch barrel. M6 PSD is used by special tactical forces and armies all around the globe, and this fact shows how useful and amazing is the weapon.
Heckler & Koch MP7
Heckler & Koch MP7 seems to be one of the best PDW weapons nowadays. It was designed to meet NATO requirements after 1989. It has short-stroke piston gas system and such small ammunition (4.6×30mm) to get low recoil (however, such ammo is an exclusive one and produced exactly for this gun).
FN P90
FN P90 is a Belgium personal defense weapon designed and created in the late 80`s. It seems to be one of the weapons of such kind nowadays. P90 caliber is 5.7, and it was designed as a powerful and compact firearm for support personnel, vehicle crews, operators of crew-served weapons, special forces and counter-terrorist groups.
KRISS Vector
KRISS Vector is a family of weapons with a submachine gun design. It was announced in 2007 as a kind of experimental combat weapons. Now it is used by Indonesian Army, special tactic forces on the Philippines, and US Army as well. Its construction gives a possibility to reduce perceived recoil.
Uzi
This one is probably the most known weapon on our list. A lot of people used to call it a "civilian MP7". Anyway, it is produced by Israeli military concern since 1950`s. It is an open-bolt, blowback-operated submachine gun and used as a personal defense weapon by lots of people.
CornerShot
CornerShot is a kind of futuristic compact assault rifle. It was created by the Lt. Col. Amos Golan for the Israel Defense Forces. This weapon gives a chance to fire from the corner, without entering into contact with the enemy. It is frequently used by the SWAT teams in situations involving terrorists or hostages.
Knight's Armament Company PDW
Knight's Armament Company 6×35mm PDW is an experimental and extremely successful personal defense weapon. It has an optimized short barrel and, as well, it is 10 inches shorter and more than 1 pound lighter than the M4. For sure, KAC created the best PDW of today.