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The WMD Guns Beast® line is all about bringing you the best parts and the best coatings in one sleek package. This battleworn nickel boron AR-15 rifle boasts one of our most aggressive finishes ever, combining intentional distressing with the sharp, dramatic angles of our Beast® billet receivers.

The Battleworn AMBI Beast® is fully ambidextrous and coated inside and out with our proprietary nickel boron formulation, NiB-X®, for protection against wear, heat, corrosion and anything else you throw at it. It comes ready with one of our premium bolt carrier groups, a NiB-X® fire control group, and a stock and grip engineered for exceptional ergonomics. 

We ship this distressed AR rifle optics-ready and prepared to deliver MOA performance right out of the box, complete with two magazines and a tactical bag. Multiple calibers and a pistol configuration may be available depending on our inventory. Learn more about the Battleworn Beast® below or contact our team for more details.

In Stock

SKU: NIBX556AMBI-D Return Policy



The Ambidextrous Battleworn Beast®

There’s something uniquely attractive about a battleworn finish — it looks like a gun has seen it all and is still ready for anything. The Battleworn Beast® build is an AR-15 rifle or pistol with a specially applied nickel boron coating that yields the visual appeal of a distressed finish and the uncompromising protection of our exceptional NiB-X® formulation. 

A completely ambidextrous billet AR-15 with a match-grade barrel, the Battleworn Beast® is built for performance. Its full-coverage nickel boron finish affords it this coating’s incredible lubricity inside and out to keep it reliable even in the face of aggressive use and heavy carbon fouling. 

The coating we use on our Beast® line has passed a 30,000-round torture test without flaking, wear or damage, and this AR wears a battleworn finish in honor of that resilience. 

A Distressed Finish With Premium Parts

We start this build with a set of 7075-T6 aluminum billet receivers, made to Mil-Spec dimensions and with easy-feed M4 ramps in the upper. The styling includes a large, flared magwell with front finger rests, lightening cuts and sharp angles for a uniquely aggressive appearance. 

The match-grade barrel is a chrome moly vanadium steel, cold hammer forged and cut to a 1:6 twist in the 5.56 NATO version. This 16-inch government profile barrel comes with a mid-length gas system, ½-28 threads at the muzzle, a door breacher muzzle brake and a deep black nitride finish for longevity. 

To finish out the hardware on this ambidextrous AR-15, we add a 15-inch free-floating tactical handguard with M-LOK® slots and a full-length top picatinny rail. The handguard, upper and lower are all covered inside and out with our deep gray battleworn nickel boron finish for an unmistakable look. 

Enhanced user-friendliness comes in with the Battleworn Beast® sporting ambidextrous small parts and an improved charging handle, plus a black ERGO pistol grip and a six-position adjustable stock with triangular cheekwell. Finally, we add a polished nickel boron bolt carrier group and a crisp, smooth two-stage trigger. The completed build weighs in at just 6.5 pounds. 

The end result is a product that looks, feels and shoots like nothing else on the market.

Your Source for High-Performing, American-Made AR Products

WMD Guns is known as one of the foremost names in firearm coatings, and we’re constantly innovating to live up to that reputation. The proprietary NiB-X® coating on this battleworn 5.56 rifle is 40% harder than hard chrome and extremely slick, resulting in a gun that outlasts and outperforms the competition. 

Along with being impervious to corrosion and wear, nickel boron gun parts resist fouling buildup, letting them run longer and simply wipe clean with a rag when it’s time for maintenance. 

With a NiB-X® bolt carrier and fire control group at its core, plus this coating on every critical surface for extreme protection, the Battleworn Beast® is ready for anything. Just load up the provided 30-round mags and hit the range. 

If you need a California-compliant model, we can add Juggernaut hardware to your build for an additional fee. 

If you’re new to buying an AR-15 online, check out our how-to-order guide to see how to get this Beast® on its way. For more information, or to inquire about pistol or alternative caliber availability, please reach out to our friendly team.


Technical Details

Lower Receiver:

Billet 7075-T6 Aluminum Machined to Mil Spec Dimensions, Ambidextrous Bolt Catch Release, Ambi Safety Selector, Large Flared Magwell with Front Magwell Finger Grips, Threaded Bolt Catch Pin, Threaded Tension Screw, NiB-X® Nickel Boron Coated For Durability, Nitrided Controls


Upper Receiver:

Billet Mil-Spec 7075-T6 Aluminum with M4 Feed Ramps. Large Bore Ejection Port, Lightening Cuts in Full Length Picatinny Rails And Charging Handle Tab, Patented Ambi Charging Handle, NiB-X® Coated For Lubricity And Durability, Nitrided Ejection Port Cover Door Assembly



Match Grade, Cold Hammer Forged Chrome Moly Vanadium Steel, 1:8 Twist, 16″ Government Profile, Mid Length Gas System, Nitromet QPQ for Extended Life And Accuracy, ½” x 28 Threads On Muzzle



5.56mm NATO


Barrel Extension:

NiB-X® Coated Barrel Extension for Extremely Smooth Locking and Unlocking With The Bolt


Gas System:

Low Profile Gas Block, CNC Machined From 4140 Steel and NiB-X® Finished, Nitromet QPQ Mid Length Gas Tube, Direct Impingement


Muzzle Device:

Nitrided “Door Breacher” Muzzle Break/Compensator


Bolt Carrier Group:

M16 Profile, Mil-Spec MP Tested, NiB-X® Coated for Reliability And Ease Of Cleaning, Properly Staked Gas Key


Fire Control Group:

2-Stage Trigger, NiB-X® Coated, 2 Pound First Stage, 2.5 Pound Break



Carbine Buffer



Optics Ready



Free Float Aluminum, M-LOK® 15″ NiB-X® Coated Tactical Handguard, QD Swivel Connection On Both Sides, MLOK Slots on 90, 180 and 270 Degrees


Receiver Extension:

6 Position Mil-Spec 7075-T6 Aluminum, NiB-X® Coated Inside and Out



6 Position Adjustable.  Triangular Cheekwell for Comfort, Rugged Materials For Durability, Rubber-Like Buttplate For Non-Slip Contact Surface, QD Swivel Connection, Collapses to cover entire Buffer Tube


Pistol Grip:

Black ERGO Pistol Grip



Tactical Bag with Exterior Magazine Pockets, Shoulder Backpack Straps, Range Ready.



6.5 lbs



33″ – 36.5″



Two PMAG Black 30-Round Magazines OR Two NiB-X® Distressed Magazines


California Compliant:

No, Add Juggernaut to make CA Compliant – $78

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Please note that this product can only be shipped to an authorized FFL dealer. You may purchase this product from WMD Guns online store, but to receive your product, you will need to do the following:

  • Send your order receipt to an authorized FFL dealer in your state.
  • Ask them to forward your order number plus their FFL license to WMD Guns at customerservice@dev.wmdguns.com or fax to (772) 618-1795.