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For other carbine variants of the M16, see M4 and CAR-15
For the other AR-15 derivatives in Siege, see 416-C Carbine, C8-SFW, C7E, M4 and Commando 9

"FBI SWAT standard issue assault rifle. Highly customizable, for medium to long range conflict."
— In-game description

The R4-C is an assault rifle featured in Tom Clancy's Rainbow Six Siege. It is available for use by Ash.

Situations and Terrorist Hunt

In the Suburban Extraction Situation, the player plays as a FBI SWAT Recruit equipped with an R4-C and a 5.7 USG as a sidearm.


The Remington R5 RGP is an M4 carbine designed and manufactured by Remington Arms. It is one of many AR-15 type rifles which uses a gas piston operating system in an attempt to improve the reliability of the weapon.

In-game, the R4-C is a fast firing assault rifle designed for close-to-mid range engagements, contrary to the quote above. Its low recoil, high damage and rate of fire make it extremely versatile and a great gun to have in almost any situation. However, the lack of a magnifying scope can make long-range engagements somewhat difficult, and the lack of an angled grip means you will be stuck with the relatively slow ADS time.


  • High rate of fire
  • High damage output
  • Low recoil


  • Lacks magnifying scopes
  • Lacks angled grip

Weapon Attachments

Under Barrel


  • On the default weapon skin, the words "Pew Pew" and "Auto" are written in red text on the left and right side of the fire selector settings respectively.
  • In the Sugar Fright limited-time event, the Scope 2.0x was available for the R4-C.

Patch Changes

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