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Rainier Arms, LLC

Rainier Arms RUC MOD 3 - 16 Black

Rainier Arms RUC MOD 3 - 16 Black
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Availability: Out of stock




We are excited to introduce to you our new RUC MOD 3. When we first introduced our RUC MOD 1 and MOD 2, our focus was to develop a rifle that integrated a lightweight design while using the highest quality components. Building on the solid foundation of our predecessors, our new RUC MOD 3 is a light weight, high quality and high performace rifle that is heavy on value. It features our new Rainier Arms 16" Night Rail, XTC 2.0 compensator and RA Selector Switch. We have also included MBUS Pro for the RUC Mod 3!

Upper Parts:

  • RA Mountain Series CHF M249 Chrome Moly Vanadium Steel 5.56mm 16" Barrel
  • 1 in 7" twist
  • Extended M4 Feed Ramps
  • MPI/HP tested Bolt
  • 1/2x28 threads
  • Carbine length gas system
  • RA Precision Match Grade Phosphate BCG/Auto carrier with properly staked carrier key
  • Pinned RA Match Lo-Pro gas block
  • RA Forged A4 upper receiver
  • RA Night Rail 16"
  • Fortis Charging Handle
  • Rainier Arms Compensator - XTC 2.0
  • Back Up Front & Rear Sights - MBUS Pro

Lower Parts:

  • RA Forged Lower
  • Mil-Spec 6 position receiver extension
  • H Buffer
  • B5 Systems Bravo Stock
  • Magpul MOE+ Grip
  • ALG QMS trigger
  • Rainier Arms Selector Switch - Standard 90 Degree/ Short (45 Degree).
  • Fortis QD end plate

Additional info:

  • RA Patriot Case Included
  • One 30 rd Hexmag magazine where legal
  • Weight 6 lbs 9 oz

FFL Required Before Shipping.

Please have your dealer email their license to or they can also fax it in. Please give us a few days to process the information. 

Additional Info

Additional Info

Manufacturer Rainier Arms, LLC
Finish Black
Barrel Length 16"
Caliber 5.56
Configuration No
Option No
Gas Length No
Height No
Rail Length 16"
Mount No
Profile No
Reticle No
Co Witness No
Size No



Feel free to ask us any question regarding this product.