"Auto, semi, and burst capable assault rifle used by SAS, best in medium range encounters."
— In-game description

The AR33 is an assault rifle featured in Tom Clancy's Rainbow Six Siege. It is available for use by SAS Recruits and the Operator Thatcher.

Situations and Terrorist Hunt

In the Heavily Fortified Situation, the player plays as the operator Thatcher equipped with an AR33 and a P226 Mk 25 as a sidearm. The rifle is equipped with an ACOG Sight, a Flash Hider, a Vertical Grip and a Laser Sight.


The HK33 is a 5.56mm assault rifle developed in the 1960s by West German armament manufacturer Heckler & Koch GmbH (HK), primarily for export. It capitalizes on the success of their G3 design, as well as develop a family of small arms (all using the G3 operating principle and basic design concept) consisting of four types of firearms: the first type, chambered in 7.62×51mm NATO, the second—using the Soviet 7.62×39mm M43 round, third—the intermediate 5.56×45mm caliber and the fourth type—chambered for the 9×19mm Parabellum pistol cartridge.

In-game, and designated as the AR33, this assault rifle is a decent, all-rounder primary weapon. However, its magazine capacity is something left to be desired, as it's a rather mediocre size of 25 rounds plus an additional round in the chamber. The recoil pattern, while not necessarily easy to control, is still rather manageable given its rate of fire.

Equipping a Vertical Grip will help ease the recoil even further, while a Flash Hider is recommended due to the high vertical recoil.


  • High fire rate.
  • Manageable recoil.
  • Has a two-round burst fire mode.


  • Mediocre magazine size.

Weapon Attachments

Under Barrel


Tom Clancy's Rainbow Six Siege

  • In the Closed Alpha version of the game, the rifle was designated as the K33 NATO.
  • The name, AR33, is simply an abbriviation of Assault Rifle 33.
  • The AR33 in-game is modeled after the HK33A2 variant.
  • The rifle is modeled with a 30 round magazine and incorrectly feeds 25 rounds out of said magazine.

Patch Changes


This page uses content from Wikipedia
The original article was at Heckler & Koch HK33. The list of authors can be seen in the page history.
As with Rainbow Six Wiki, the text of Wikipedia is available under the GNU Free Documentation License.

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