Ruby AR15

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Ruby AR15

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Product Overview

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

Technical Specs

Sights / Optic

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

Internals / Receiver

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

      What others are saying

      Customer Reviews

      Dear Rooftop Arms: I can’t thank you enough for the pleasant experience utilizing your company. Most people are very hesitant to purchase an item costing vast amounts of money, especially when it is an out-of-state online purchase. Not to mention, requiring two separate tax stamps! You’ve been on top of everything when it comes to NFA items and your communication has been there every step of the way. The build of the firearm I purchased is beautiful as well as quality. I’ll be sure to keep you on my list of trusted firearm dealers. Thank you for being forthright and knowledgeable when it comes to purchasing ATF regulated items. You’ve made the process seem easy which is what people like to see more than anything! I’m sure we will do business again in the future. God bless.

      Pennsylvania, USA

      I am not usually one to do reviews however with something of this nature and wishing to share my experience, I felt it prudent to share. I have spent an immense amount of time researching how to build, what parts to purchase, and every other thing imaginable to build a matching set of AR-10 and AR-15. I wish I would have saved hours and found Rooftop Arms first! Let’s hit the high points: Made in America, Veteran owned, GREAT customer service. They had the ability to build the exact rifles I wanted with high-quality parts, and a difficult paint job that came out perfectly! Every step of this build far exceeded what I was hoping to get at the end. Spending a large amount of money, over $15,000, I wanted these rifles to be utterly amazing and they sure are! The highlight was Erin giving me a call and telling me my build was ready to be picked up. A few hundred rounds through both rifles and I am very happy! The last add-on will be to get my tax stamp through so I can add on my suppressor. They are walking me through that process as well. Thanks, Rooftop Arms!

      Washington, USA

      Working with Rooftop Arms was a seamless process. I bought their Ruby model AR15 rifle. Not only is the rifle absolutely stunning, but they made the California compliant process a breeze. I ended up with a beautiful gun that is always the talk of the range when I show up. I’m a very small frame lady, and the Ruby model is flawless and shoots better than any other AR15 I have ever shot! Don’t hesitate to call Rooftop Arms for all of your high-end firearm needs, you won’t be disappointed!

      California, USA



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