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Rainier Arms, LLC

Rainier Arms RUC MOD 3 - 16 Black

Rainier Arms RUC MOD 3 - 16 Black
Only 1 left

Availability: In 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


Customer Reviews (3)

Best AR15 I have shot to date.Review by
I have had the pleasure of shooting a few AR-15's over time but never owned one due to not having one that fit what I felt was my personal preferences. Till now. The moment I held the RUC Mod 3 I wanted to take it home. That is exactly what I did. I bought one. Took it to the range and zeroed my Vortex Sparc AR Red-Dot sight. After that this rifle is super accurate.
I was able to hold a 1" grouping at 75 yards going rapid fire on a private shooting range.
at 50 yards you can cover up my grouping with a quarter.
Would I recommend this rifle to everyone. YES! Absolutely. It's the perfect balance of price / performance. The build quality is far above even some of the brand name AR's on market. So kudos's to Rainier arms for making an amazing product.
(Posted on 12/29/2016)
Awesome!!! Love it!!!Review by
Awesome!!! (Posted on 11/25/2016)
Superb Firearm!Review by
High-quality components and incredibly accurate! Everything you'd expect from Rainier Arms! (Posted on 9/29/2016)

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