ARX 100


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 Maintenanceeasy_maintance_arx100

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 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.

arx_100_battle_rifleUltimate 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.





Action Semi-auto
Barrel length (mm) 406
Barrel length (in) 16
Caliber .223 Rem
Magazine 30
Overall heigth (mm) 215
Overall heigth (in) 8.5
Overall length (mm) 908
Overall length (in) 35.75
Overall width (mm) 70
Overall width (in) 2.75
Rate of twist 1/7
Sight radius (in) 15
Sight radius (mm) 381
Sights Removable/Adjustable
Weight unloaded (g) 3080
Weight unloaded (OZ) 108.8

Where To Buy

Our Retail Locations

Locate your nearest Beretta dealer to find pistols, shotguns, accessories, clothing or Sako and Tikka Rifles.


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1. Picatinny Rails

The ARX100 comes equipped with several Picatinny rails to easily accept a variety of tactical accessories--from sighting to lighting systems and much more.

2. Quick-Change Barrel

The barrel is cold-hammer forged and chrome-lined for maximum toughness, corrosion-resistance and durability. It is also easily replaceable in a matter of seconds, making it possible to equip your ARX100 with barrels of different lengths and calibers.

3. Folding Back-up Sights

On a modern tactical rifle, sights are often an after-thought. Not so with the ARX100: the technopolymer flip-up backup aperture sights are feather-light but tough, and offer easy adjustability for ranges up to 800 yards.

4. Ambidextrous Safety

The ARX100 features an AR-15 style 2-position ambidextrous safety. This will make it instantly familiar to shooters experienced in the use of the standard US military rifle.

5. Ambidextrous Mag Release

The magazine release, like all other critical controls of the ARX100, is ambidextrous. This makes it not only perfect for both right- and left-handed shooters, but also adaptable to a variety of tactical scenarios.

6. Ambidextrous Charging Handle

The charging handle is fully ambidextrous.

7. Ambidextrous Case Ejection Selector

You can select whether you want your empty brass to be ejected to the left or right. But the selector itself is also ambidextrous, making operation with either hand easily possible under any condition.

8. Ambidextrous Bolt Release

The bolt release--as all other controls--is ambidextrous.

9. Telescopic Folding Stock

The telescopic folding stock is adjustable for length of pull at the touch of a button.

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