Description
That silver finish is not paint. WMD Guns built its reputation doing metallurgy and plating work for other names in the industry, and the Beast 9mm is what happens when they coat a whole gun in their own NiB-X nickel boron. The billet 7075 aluminum upper and lower, the free float handguard, the barrel extension, and the six position receiver extension inside and out all get the treatment. Nickel boron is harder than hard chrome with a friction coefficient down near Teflon, so moisture, corrosion, and powder fouling have a hard time getting a grip. After a long range day, most of the carbon comes off with a dry rag instead of a scrub brush.
What Makes the Beast 9mm Carbine Tick
The bones underneath are just as sorted. The 16 inch M4 profile barrel is match grade chrome moly vanadium steel with a 1:10 twist, and the bore gets a Nitromet QPQ salt bath nitride treatment for wear resistance and long term accuracy. WMD publishes real numbers on this model too, with Federal American Eagle 123 grain printing around 0.55 MOA at 50 yards and Remington 115 grain FMJ holding roughly 1.75 MOA at 100. For a straight blowback 9mm AR, that is genuinely impressive shooting. The whole build tips the scales around 7.2 pounds, which soaks up what little recoil 9mm produces in the first place.
Set Up the NiB-X Beast Your Way
Magpul MOE furniture handles the stock and grip, and the CNC machined 6061-T6 handguard carries M-LOK slots for lights, hand stops, and sling mounts. The flat top upper leaves plenty of room for a red dot, which is how most people run a pistol caliber carbine like this. Feed it from the included 33 round magazine, load up on affordable range ammo, and you have a made in the USA carbine that stands out on the firing line and cleans up in a fraction of the time.
Key Specifications
- Manufacturer: WMD Guns
- Model: NiB-X Beast 9mm Carbine
- Manufacturer Part Number: 1-9MMCARBINE
- UPC: 854839008078
- Caliber: 9mm Luger
- Action: Semi-Auto, Blowback
- Barrel: 16" M4 Profile, Match Grade Chrome Moly Vanadium, 1:10 Twist
- Bore Treatment: Nitromet QPQ Salt Bath Nitride
- Receivers: Billet 7075 Aluminum, NiB-X Nickel Boron Coated
- Handguard: Free Float 6061-T6 Aluminum, M-LOK, NiB-X Coated
- Receiver Extension: 6 Position Mil-Spec 7075-T6, NiB-X Coated Inside and Out
- Stock: Magpul MOE
- Grip: Magpul MOE
- Capacity: 33 Rounds
- Finish: NiB-X Nickel Boron, Silver/Black
- Country of Origin: USA
What’s Included
- WMD Guns NiB-X Beast 9mm carbine
- One 33-round magazine
- Tactical soft bag
Frequently Asked Questions
Is the silver NiB-X finish just cosmetic, or does it do something?
It is a working coating, not a paint job. NiB-X nickel boron is harder than hard chrome and extremely slick, so carbon and fouling do not bond to the surface the way they do on phosphate parts. Most grime wipes off with a rag, and the coating keeps its lubricity even when the gun is running fairly dry.
How accurate is the NiB-X Beast 9mm carbine?
WMD publishes factory results for this model, with Federal American Eagle 123 grain grouping around 0.55 MOA at 50 yards and 1.25 MOA at 100, and Remington 115 grain FMJ running about 1.75 MOA at 100 yards. For a blowback 9mm AR, those are strong numbers, and the Nitromet treated match grade barrel deserves much of the credit.
Can I mount a light and an optic on this carbine?
Yes. The free float handguard is CNC machined from 6061-T6 aluminum with M-LOK slots, so lights, hand stops, sling mounts, and rail sections attach directly. The flat top upper gives you plenty of room for a red dot or a low power variable, which is how most folks set up a pistol caliber carbine.
Why choose a 9mm AR carbine like the Beast over a 5.56 rifle?
Range ammo costs a lot less, recoil is soft, and the report is milder, all of which make it easy to shoot high round counts. You also keep the AR controls and ergonomics you already know. With this one, the full NiB-X coating means all that shooting takes far less cleanup afterward.



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