AR-15 Forged CHASSIS®, NiB-X®

Have a specific stock and grip in mind for your new AR-15? Many shooters have distinct ergonomic preferences for their rifles, which leaves them with the option of building from scratch or buying a complete gun and having spare parts lying around after they make their changes. If this is the case for you, the WMD Guns CHASSIS line is the answer. 

This polished nickel AR rifle with no grip, stock or handguard is optics-ready and prepared for your furniture of choice, giving you a customizable rig without the extra effort of matching receivers or doing a complete assembly. 

What’s more, this model from our CHASSIS line comes with our proprietary NiB-X® finish in high polish on its receiver extension and matched forged upper and lower. Its small parts and barrel are finished in black nitride for exceptional protection and high contrast. All it needs is your preferred furniture and handguard to be ready to hit the range. 

We built this AR-15 base set starting with 7075-T6 forged aluminum receivers and a six-position Mil-Spec receiver extension, all coated in bright, polished NiB-X® inside and out. The upper has M4 feed ramps cut in to facilitate easy loading. 

The barrel on this polished chassis is a match-grade model with a 1:7 twist rate to handle heavier projectiles of up to 90 grains. Its government profile keeps the weight low, while a length of just 16 inches makes it highly maneuverable. We include a NiB-X® coated barrel extension for lightning-fast locking and unlocking, plus a black boron nitride finish for protection and heat dissipation. 

Our polished stockless AR-15 includes a nickel boron fire control group with coated sear, disconnector and hammer — adding the lubricity of NiB-X® to these critical surfaces provides one of the smoothest pulls and resets possible for a Mil-Spec trigger configuration. 

This AR rifle base setup also comes with a polished NiB-X® bolt carrier group for top-end value and reliability, plus a charging handle. All you need is a compatible stock, grip and handguard — which we make easy with the included carbine-length gas system and low-profile gas block. Just order your handguard and choose some furniture then pick up a new mag or two to have a perfectly customized AR with minimal assembly required.

Nickel boron is undeniably attractive, but its benefits go far beyond looks. Our proprietary NiB-X® formulation on this AR rifle’s exterior gives it some of the best protection available from rust, corrosion and wear, and we’re so confident in its longevity that it comes with a lifetime warranty. 

A nickeled AR rifle chassis also benefits from having this coating on the inside. NiB-X® is incredibly slick, so it resists carbon fouling for continued function long after lesser ARs have started to fail. With this coating on the interior surfaces, the bolt carrier group and the critical fire control components, cleaning is effortless and operation is consistent. 

This made-in-America rifle weighs 5 pounds without furniture, measures 33 inches long and is chambered in 5.56 NATO. Just pick out your grip, stock and handguard to turn this AR-platform rifle chassis into a personalized rig without the time and effort of assembly or having it coated after purchase. 

Per ATF rules, this CHASSIS model is a complete firearm, so you’ll need to have it shipped to an FFL. If you have any questions about the ordering process or this and other WMD Guns products, we’re here to help. 

Specifications:

• Lower receiver: Forged 7075-t6 aluminum machined to Mil-Spec dimensions, front magazine well finger grips, NiB-X® nickel boron coated for durability.
• Upper receiver: Mil-Spec 7075-T6 aluminum forging with M4 feed ramps. NiB-X® coated for lubricity and durability.
• Barrel: Match-grade chrome moly vanadium steel, 1:8 twist, 16-inch government or m4 profile, mid gas system, nitromet QPQ salt bath nitrided in the bore for extended life and accuracy, NiB-X® coated on the outside for durability and heat dissipation.
• Barrel extension: NiB-X® coated barrel extension for extremely smooth locking and unlocking.
• Gas system: Low-profile gas block, CNC-machined from 4140 steel and NiB-X® finished, nitromet QPQ carbine-length gas tube, direct impingement
• 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:  Hammer, trigger and disconnect coated in NiB-X® for lower pull force (<6 lbs) and smooth reset.
• Buffer: Carbine buffer
• Sights: Optics-ready
• Receiver extension: Six-position Mil-Spec 7075-T6 aluminum, NiB-X® coated inside and out and then distressed for the battleworn look.
• Caliber availability: 5.56mm NATO
• Gas system: Carbine
• Product weight: 5 pounds
• Length: 33 inches