4.6 out of 5

ARX 100

The ARX100 is the ultimate evolution of the modern tactical semiauto rifle. Find out more about its fully-ambidextrous operation, tool-free disassembl ... Read More

Buy Now

Model Code
Model Name
ARX 100
$ 1950.00
5.56 /.223 REM
Action Semi-auto
Barrel length (mm) 406
Barrel length (in) 16
Caliber 5.56
Historical N
Magazine 30
Overall height (mm) 215
Overall height (in) 8.5
Overall length (mm) 908
Overall length (in) 35.75
Overall width (mm) 70
Overall width (in) 2.75
RateOfTwist 1/7
SightRadiusIN 15
SightRadiusMM 381
Sights Removable/Adjustable
Weight unloaded (g) 3080
Weight unloaded (OZ) 108.8
Buy Now

ARX100: Today’s Ultimate Tactical Rifle

The ARX100 was engineered with one purpose in mind: to be today’s best tactical semiauto rifle.


It takes the concept of a modular rifle to futuristic levels, while maintaining an absolutely simple operation that make it ultra-reliable. With ambidextrous controls, easily-replaceable barrel and virtually endless possibilities for customization and accessorization, the ARX100 is adaptable to any firing scenario and is perfect for today’s most demanding tactical shooter.

Ultimate-Reliability-and-Ease-of-MaintenanceUltimate Reliability and Ease of Maintenance

The ARX100 features a constant contact/short-stroke gas piston system that makes it feed and fire under the most unforgiving conditions. The lightweight technopolymer receiver allows for reliable operation with virtually no lubricants. To make maintenance easy and trouble-free, this rifle has no pins and can be completely disassembled in a matter of seconds with no tools at all.



Ultimate VersatilityUltimate-Versatility

This rifle was designed to be completely ambidextrous, and all the critical controls on it may be operated right- or left-handed. These include the 2-position safety, the magazine release, the bolt release and charging handle and the case-ejection selector, which determines whether spent brass is ejected to the right or left. The flip-up backup sights that come standard on the ARX100 are also versatile, offering an easily-adjustable diopter system ranged from 100 to 800 yards. The barrel is also easily replaceable in seconds, making is possible to use different lengths and calibers without any tools required. Lastly, the folding stock is adjustable for length of pull at the touch of a button, using a simple and rugged telescopic construction.

Ultimate-AccessorizationUltimate Accessorization

The possibilities for accessorization on the ARX100 are limited only by the user’s imagination. It comes out of the box with a full-length Picatinny rail on top, which is perfect for attaching a variety of optics and other sighting systems. It also has Picatinny rails on both sides of and under the fore-end, which offer countless possibilities for easily adding lighting systems and other tactical devices. 

Also available in a .22LR version.

Customer Reviews

Average Rating

4.6 out of 5

Based on 18 reviews

44% would recommend this item to a friend.

Would you recommend this product to a friend?
5 out of 5

79 out of 82 people found the following review helpful

Excellent rifle

I sure love this rifle, I just wish Beretta actually supported it. Where are the caliber conversions and other new accessories? Have you abandoned it completely?

3 out of 5

106 out of 139 people found the following review helpful

ARX 100

You have pictures that show people with a 10.5" Barrel but don't offer a 10.5"barrel. You say Ultimate Accessorization but offer no accessories. Where's the 300 BLK out barrel? Shame on Beretta for alienating it's customers like this