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Overview Siege

"7.62x51mm caliber assault rifle, adapted for close quarter operations, high damage and severe recoil."
— In-game description

The Mk17 CQB is an assault rifle featured in Tom Clancy's Rainbow Six Siege. It was introduced in the Operation Dust Line expansion pack and is available for use by Blackbeard.[1]


In game, contrary to its description, the Mk17 CQB suffers from a dreadful damage output that puts it on par with the UMP45. Combining an underwhelming single-shot damage of 40 and an extremely slow fire rate of 585, the Mk17 CQB is the weakest Assault Rifle with the slowest Time To Kill of its class against Operators of all Armor Ratings. To top it off, the Mk17 has a measly magazine capacity of 20+1 rounds. Equipping Blackbeard's Rifle Shield gadget significantly lengthens the Mk17 CQB's ADS time.


  • Moderate recoil
  • Relatively fast reload speed


  • Low rate of fire
  • Low damage per shot and overall damage
  • Slow ADS time with Rifle Shield equipped
  • Harsh damage dropoff
  • Low magazine capacity

Weapon Attachments[]

Under Barrel



  • As a weapon exclusive to its Operator, the Mk17 CQB comes with two irremovable locks that hold the Rifle-Shield in place.
  • The rifle's designation, Mk17 CQB, likely refers to the Mk 17, an updated version of the SCAR-H, and Close Quarters Battle, an alternate term for Close Quarters Combat.
  • The default skin of the rifle has a barcode and a QR code on it. The barcode says "Numbers to Letters", while the QR code reads "The EUF knows, pack your things and run".

Patch Changes[]