AR 9 Platform

Current Lead Time Information
Rooftop Arms builds premium custom firearms by hand. With Rooftop Arms you are not purchasing a gun off of an assembly line. Every gun is built individually and fully tested before shipping. Only a small number of firearms are produced quarterly in order to maintain our high standards of quality and precision. Due to the nature of our business, lead times can vary. Current lead times are 6-10 weeks depending on many factors.

 Rooftop Arms is proud to be veteran-owned. All of our production and assembly takes place in the great and powerful United States of America. Each Rooftop Arms brand firearm is hand-built and tested before going to the customer.



The AR 9 platform has rapidly gained popularity in recent years. It is well-loved by the firearms community for its extremely low recoil and low cost of shooting. The “AR Rifle Platform” is a generic term for any type of firearm with a specific set of design features. This is a similar idea to a 1911 pistol for example. The 1911 design is over 100 years old, however, it’s still very popular today and there are thousands of companies around the world making various models of them.

The AR rifle is a very similar idea. The “9” in AR 9 generally refers to the fact that these guns use pistol magazines (Commonly Glock) and shoot pistol ammunition, but the functionality remains the same among all AR-style rifles. AR 9s do not have a gas system which makes their operation very simple. AR 9s tend to be lighter and have much more mobility than their bigger counterparts, the AR15, and AR10.

Also, the fact that they shoot pistol cartridges allows them to be used at indoor gun ranges that only allow pistol shooting. These are very unique and versatile firearms. If you haven’t already figured it out, here at Rooftop Arms we specialize in building the most ultra-high-end ARs on the market. Every part we use is top of the line. From an $85 billet safety all the way to the top-of-the-line barrel, every part is hand-selected by Rooftop Arms so you end up with the best rifle you can buy.

Sure, a cheaper rifle will get the job done, but why buy a Camry to commute to work if you can commute in a 911 GT3? Combine this with each Rooftop Arms model being paired with a top-of-the-line optic that comes bore-sighted, a carrying case, cleaning kit, and magazines and you are going to head to the range and have a great experience.

Light and Fast AR 9 Style Rifles/Pistols That Use Glock Pistol Magazines

Proven Design

Countless Aftermarket Parts Available

Highly Accurate

Ultrafast and Lightweight

Great For Tight Spaces


Highly Customizable


We specialize in high-end custom builds, generally in an AR-style platform. If you can dream it, we can build it. We focus on ultra-premium parts and quality. Every custom build will be on a Rooftop Arms 100% billet receiver set. Given our high-quality build standards and the fact that every build is paired with an optic, our minimum required build budget is $3000 pretax. Most customers spend approximately $5000 on average with the firearm/coatings/optics/etc.

Every custom build includes free shipping to your local FFL with tracking/insurance. If you are interested in a one-of-a-kind custom build, complete our electronic form by clicking the build your own gun button. The more detail you can provide the better. Your new build will be the envy of the entire gun range! After submitting this form our team will contact you to get more details and start your build process!