SKU: RT15-LW-RUBY-CG Categories: ,

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Ultra-light/Low recoil/Fast Cycling

The Ruby model AR15 platform rifle, chambered in 5.56, offered by Rooftop Arms is a top-of-the-line build that is designed to be an ultra-lightweight rifle but still maintains very high-quality parts to ensure a great shooting experience. It is named after Ruby Bradley, one of the most decorated women to serve in the United States military. It sports both a carbon fiber handguard and buttstock. With the finished rifle/optic weighing approximately 5 pounds, it shoots like a dream and is extremely nimble. The ultralight bolt carrier group from JP enterprises is the hidden gem in this rifle, we are in love with it! The felt recoil is much lower than a standard AR15 in this caliber. The cycling speed is also ultrafast. Whether you shoot competition or just want a phenomenal lightweight AR build, the Ruby model is an excellent choice. The Ruby comes mounted with a Trijicon MRO red dot sight which is also lightweight and has the perfect simple reticle for a build like this.

Rifle ships with premium carrying case, bore boss cleaner, 4 30rd Lancer L5AWM magazines


Trijicon MRO

  • Low Mount
  • Very Comfortable
  • Simple Reticle
  • Light Weight
  • Ultrafast Target Acquisition

No Back-Up Sights

  • No Back-Up Sights on This Build
  • Nice Clean Look and Feel Without Backup Sights to Add Clutter


Rooftop Arms Brand Upper/Lower Matched Receiver:

  • 100% Light Weight 7075-T6 Aircraft Grade Hardened Aluminum
  • Made from Billet Aluminum (not Forged or Castings)
  • Oversized Billet Trigger Guard
  • Compatible With Most Ambi Bolt and Mag Releases
  • Upper Tension Screw
  • Threaded Bolt Catch Pin Hole
  • Threaded Safety Detent Pin Hole
  • Contoured Trigger Finger Rests Sides Of Magwell 
  • Beveled Top and Bottom Magwell
  • Broached Extra Smooth Magwell

JP Ultralight Bolt Carrier Group:

  • Chromium Nitride Finish
  • Increased Reliability
  • Ultrafast Cycle Time
  • Reduced Recoil
  • Easy to Clean

Rise Armament Match Grade Trigger:

  • Flat
  • Single Stage
  • Crisp and Clean Take-Up/Break/Reset

Brigand Arms Premium Carbon Fiber Hand Grip

Premium Quality Lower Parts From Battle Arms Development:

  • Billet Bolt Catch
  • Billet Mag Oversized Mag Release
  • Billet Mag Catch
  • Billet Ambi Safety Selector

Radian Raptor Charging Handle


Match Grade Barrel:

  • Faxon 16” 5.56 NATO Pencil Barrel
  • Guaranteed 1 MOA at 100yd
  • ½ x 28 Threads
  • .625 Adjustable/Tuned Gas Block
  • Black Steel Gas Tube
  • Lantec Dragon Compensator/Muzzle Break

Premium Buffer/Buttstock Kit:

  • Captured Buffer Spring from JP Enterprises
  • Brigand Arms Carbon Fiber Buttstock With Integrated Buffer Tube
  • Custom/Proprietary Textured Shoulder Pad
  • Medium Length of Pull/Nonadjustable
  • A1 Length
  • Ratcheting Single Point Sling Mount Receiver End Plate By Fortis

Brigand Arms Blade 15” Handguard:

  • Carbon Fiber
  • Free Floating
  • No Rail To Impede Grip