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Rebel Arms MOD 3 14.5" 5.56 NATO Complete Upper

Product Code: rbr-mod3-14-5-upper

Availability: In stock

Rebel Arms MOD 3 14.5" 5.56 NATO Complete Upper

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  **If you purchase an upper with any lower you will be charged separately for excise tax**

This Rebel Arms RBR-15  MOD 3 upper is equipped with a Rebel 14.5" 4150 Nitride 1/7 twist premium barrel with a Mid length gas system and nitride BCG. It has a pinned SilencerCo ASR muzzle brake and fully Nitrided Rebel gas block and gas tube. We can put other brake on your MOD 3 Upper. Please E-mail Support@rebelarms.com and let us know what you need!


Upper Features:

  • Machined from forged 7075 aluminum to keep it light
  • Mil spec hard anodizing for durability
  • 1.7 oz lighter than a mil spec upper receiver with hardware installed
  • Captured dust cover door pin eliminating the need for the E clip

Our lightweight Complete Upper Receiver offers less weight than a mil spec upper receiver and we’ve done away with the forward assist to reduce snag risk. Start your upper assembly right with our Complete Upper Receiver today!


  • 6.2 oz stripped
  • 12” x 6” x 4”


  • Extruded 6061 aluminum to keep weight down
  • Mil-spec hard anodizing for durability
  • Full length mil-spec Picatinny top rail
  • PicMod rails allow mounting KeyMod and Picatinny accessories


When you want that extra layer of hand protection and better accessory mounting without the weight, try a Rebel Arms handguard. Our specially designed handguard rail has a Picatinny rail on top and our specially designed PicMod handguard rails on the other three sides. This technology combines both Picatinny and KeyMod rail systems so you can attach nearly all KeyMod and Picatinny accessories with ease.




13″ Handguard 

  • 8.6 oz without mounting hardware
  • 1.675” wide, 2.05” wide, 13.4” long
  • Designed to work with any barrel 14.5” or longer


(Upper comes with brake pinned and welded) Ban state uppers will come with the SilencerCo Saker Trifecta Muzzle Brake. The ASR Blast Shield will not work with the Saker Trifecta Muzzle Brake.

Additional Information

Additional Information

Manufacturer Rebel Arms
Caliber 5.56 NATO
Gas Length Mid-length
Barrel 4150 CMV Nitride
Barrel Length 14.5"
Gas Block Low-Profile Gas Block
Front Site Optics Ready (none)
Handgaurd 13" Picmod Handgaurd
Finish Anodized
Muzzle Device Silencerco ASR Muzzle Brake
Product Weight 3lbs 11oz

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