Desert Tech takes the all-American AR-15 rifle to a new level with the Quattro-15. While the AR-15 is one of the most popular firearms in the United States, few companies have played around with changing the layout of the design. But Desert Tech has nearly doubled the capacity with its proprietary quad-stack magazines.
 

Table of Contents

Video Review

The Quattro Concept
The Design
Performance
My Thoughts
Conclusion

video review

 

 

The Quattro Concept


The Desert Tech Quattro-15 is an AR-15 lower designed to accept quad-stack .223/5.56 53-round magazines. The idea behind the Quattro is to give the user the ability to carry a standard seven 30-round magazine loadout with only four magazines. 

The advantage of the Quattro is to cut down on reloads, giving extending shooting time on each magazine. 
 

The Design


Outside of the thick magazine well paired with the 53-round magazine, the Quattro-15 features an ambidextrous lower with well-planned controls. 
 

Desert Tech Quattro-15
Reloads are few and far between with these 53-round quad-stack magazines. (Photo: Zach Buth/Guns.com)


Like the SIG M400 SDI X-Series, the Quattro features a right-mounted bolt hold/release lever above the standard magazine release. The layout makes it easy for a right-hander to operate the bolt release with the trigger finger without having to break their grip. 
 

Desert Tech Quattro-15
Controls are well designed, with a truly ambidextrous mag release...  (Photo: Zach Buth/Guns.com)

The left side of the receiver features a magazine release right under the standard bolt hold/release control. Lefties can reach the button with the shooting finger, giving the same easy control operation as for righties. 
 
 
Desert Tech Quattro-15
...seen here under the bolt hold/release. (Photo: Zach Buth/Guns.com)


Ambidextrous controls are often thrown onto the firearm with little forethought to their placement. Some ambi controls are even placed inside the trigger guard, which I am not a fan of at all. With the Quattro, all the controls are well executed, and the placement makes reasonable sense for easy manipulation. 

The last insightful addition to the lower is a QD sling mount at the rear of the receiver. The rear placement is ideal for single-point slings, and Desert Tech gets bonus points for adding a simple feature that I believe is essential. 
 

Performance


Luckily, I was able to spend a little bit of time on the range putting the Quattro through some paces and drills. In 500 rounds of brass and steel-cased ammo, I encountered only about three malfunctions.
 

Desert Tech Quattro-15
I found the quad-stack mags fed smoothly, a welcome surprise considering my past experience with high-capacity prototype mags. (Photo: Zach Buth/Guns.com)
 


All the malfunctions seemed to be follower related, as the nose of the round did not seat high enough to slide up the feed ramp. The issue was easily resolved with a simple tap – the trusty old “tap, rack, bang,” solution.

I was pleasantly surprised with the performance of the prototype quad-stack magazine. In my experience, high-capacity magazines tend to be finicky, and I was expecting to see a lot of malfunctions.

The lower’s controls made drills and shooting sequences easy and quick. The only hiccup with drills is the tactical reload, as the thick construction of the magazines makes it a little difficult to palm two magazines while executing the change. 
 

My Thoughts

Overall, I love the thought of increasing the capacity of the AR-15. The Quattro-15 just feels American and patriotic. I especially enjoy the “Restricted for Patriot Use Only” marking on the receiver. 

At times when I was going through shooting progressions, I thought, “Okay this is it – last drill and then I have to reload,” but the rounds just kept flowing. It felt like hitting the infinity hack on ammunition.

This increased capacity concept from Desert Tech is just begging for a binary trigger. In fact, at SHOT Show this year, I got to shoot the fun switch Quattro, which really showcases the benefit of higher capacity. 
 

Desert Tech Quattro-15
Check out those beefy mags. (Photo: Zach Buth/Guns.com)


In practicality, I am not going to say this design is replacing any of my go-to rifles. Increasing capacity is great, but there is something to be said about running standard and common AR magazines. There will be an insert for the lower to run STANAG-profile mags, but it adds a level of complexity. 
 

Conclusion


While I am not sold on replacing my duty rifle with the Quattro, the American concept of “bigger and better” makes the Quattro-15 a great firearm to add to your collection. 

As always, whether you run standard or extended capacity magazines, training is the most important part. It doesn’t matter how many rounds you have in a mag if you don’t master the craft. So, grab some ammo and hit the range. 

revolver barrel loading graphic

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