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"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, SAS Operator Thatcher is deployed and is 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 leaves something to be desired, as its rather mediocre size of 25 rounds, plus the additional round in the chamber, are not particularly attractive qualities for a gun. The recoil pattern, while not necessarily easy to control, is fairly manageable given its rate of fire.


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


  • Mediocre magazine size.

Weapon Attachments

Under Barrel


  • In the Closed Alpha version of the game, the rifle was designated as the K33 NATO.
  • The name, AR33, is simply an abbreviation 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 the said magazine.

Patch Changes

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