Home / Shop / AMBI BEAST®


Rated 0 out of 5


The WMD Guns AMBI Beast is a legend in AR form, equipped with a slick nickel boron finish, a matched set of billet receivers and fully ambidextrous hardware. With a NiB-X® coating inside and out and a hammer-forged barrel engineered for match-grade performance, this Beast is ready for anything.

Ambidextrous, American-made and prepared for sub-MOA groups on delivery, the AMBI Beast is everything shooters want in an AR-15. With nickel boron on all critical surfaces, this member of the Beast line affords the effortless cleaning, flawless function and exceptional reliability you expect from a WMD Guns AR.

The AMBI Beast is chambered in 5.56 NATO, though pistol models and additional calibers may be available.

Availability: In Stock

SKU: NIBX556AMBI Tags: , Return Policy



The AMBI Beast®

WMD Guns’ Beast line contains the world’s first AR-platform firearms sporting our proprietary NiB-X® coating inside and out. A nickel boron AR-15 is always going to turn heads, but this magnificent Beast goes beyond striking looks to deliver legendary performance and reliability, plus the convenience of fully ambidextrous controls. 

We designed the AMBI Beast® with sharp, aggressive lines, a hammer-forged barrel and user-friendly controls to build an AR that shoots as good as it looks. Best of all, a rifle coated with nickel boron is easier to clean and more reliable, so you can rely on the Beast in any environment and every scenario.

The Benefits of NiB-X® Coating Technology

Nickel boron on a firearm is the best possible blend of sexy and practical. It resists moisture, powder fouling, lubricant buildup and corrosion to keep your AR running clean. WMD Guns’ proprietary NiB-X® coating features the best characteristics of this technology because we were part of the team that first developed it. 

Nickel boron is 40% harder than chrome and exhibits exceptional natural lubricity. When you add those factors to a premium AR-15 build, you get something legendary. Our coating equips this ambidextrous AR to resist damage due to friction, wear and the elements, and the slick operation of its coated internal parts eliminates buildup to mitigate feeding issues. 

You can expect the AMBI Beast® to run all day no matter what you throw at it, then just wipe it down with a rag to remove carbon and other buildup. Thanks to the power of nickel boron, the Beast line yields the smoothest AR rifles and pistols you’ll ever fire. 

A Fully Protected, Fully Ambidextrous AR-15

This member of the Beast family boasts NiB-X® protection on its critical parts and a stunning bright nickel finish. At the heart of the AMBI Beast® is a matched set of Billet NiB-X® coated 7075 aluminum receivers and a match-grade hammer-forged barrel. Those receivers contain a high-polish nickel boron BCG and an enhanced NiB-X® fire control group with a two-stage trigger for smooth, flawless operation. 

On the outside, the rifle is fitted with a 15-inch NiB-X® M-LOK® handguard, a six-position adjustable stock and a comfortable Ergo grip. A black nitrided parts kit and charging handle tabs pull the look together and afford effortless ambidextrous control. 

The AMBI Beast® comes with a pair of 30-round mags and a tactical bag with backpack straps for easy transport. Empty, the 5.56 model weighs just 6.5 pounds.

Ordering the WMD Guns AMBI Beast®

This sleek, rugged AR-15 is made in America with pride, boasting sub-MOA potential and extreme reliability right out of the box. If you’re looking for an ambidextrous nickel boron AR, the AMBI Beast® has everything you need.

Depending on availability, you can order this model in various calibers and a pistol configuration. 

While you can order this firearm online, please note that it will have to ship to an FFL dealer. It’s best to contact your FFL of choice before ordering. After you check out, give them your order number so they can send their documentation via customerservice@dev.wmdguns.com or fax it to (772) 618-1795. 

Review the technical specs for more on what makes the AMBI Beast® unique, then order online to experience the unmatched performance of a firearm from WMD Guns.


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 30 Round Magazines


California Compliant:

No, Add Juggernaut to make CA Compliant – $78

My Cart
Scroll to Top

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.