The WMD Guns NiB-X AR-15 Pistol (brand part no. NIBXARPISTOL-RSR) is chambered in 5.56 NATO and finished with WMD’s proprietary NiB-X nickel boron coating on every exterior surface. That coating runs roughly 40% harder than chrome and stands up to moisture, corrosion, and heavy wear far better than a standard finish, while NiB-X-coated internals cut friction for an action that runs exceptionally smooth. Built for shooters who want a rifle-caliber pistol that’s ready for hard use in any climate, this 10.5-inch-barreled AR pistol pairs distinctive good looks with genuine corrosion resistance. It’s a standout in the AR pistols lineup from WMD Guns.

Key Specifications

• Chambered in .223 Rem/5.56 NATO for widely available, affordable ammunition.
• Features a 10.5-inch barrel for a balance of maneuverability and velocity.
• Ships with a 30-round magazine for a full-capacity carbine-style load.
• Every exterior surface is finished in NiB-X nickel boron coating, about 40% harder than chrome.
• Key internal components also receive the NiB-X coating to reduce friction and wear.
• Runs a semi-automatic action built around WMD’s proven internals.
• Barrel is chrome moly vanadium steel, cut to a 1:7 twist rate to stabilize standard 5.56 bullet weights.
• Wrapped in a free-floating 9-inch M-LOK handguard for mounting accessories along its length.
• Runs a pistol-length gas system tuned for reliable cycling off the 10.5-inch barrel.

Frequently Asked Questions

What makes the NiB-X finish different from a standard coating? It’s roughly 40% harder than chrome and highly resistant to moisture, corrosion, and wear, both inside and out.

What magazine capacity does it ship with? A 30-round magazine.

What caliber does it run? 5.56 NATO, with a 10.5-inch barrel.

Buy the WMD Guns NiB-X AR-15 Pistol

Between the corrosion-resistant NiB-X finish and a smooth-running coated action, this AR pistol is built for shooters who want their rifle-caliber pistol to hold up in tough conditions. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.