LWRC IC MK II SBR 5.56mm 12″ Barrel – Patriot Brown | 30rd Mag (NFA Item)

The LWRC IC MK II SBR in Patriot Brown is a purpose-built, short-barreled rifle chambered in 5.56mm NATO that delivers elite-level performance in a compact, maneuverable package. Backed by LWRCI’s legendary American craftsmanship, this SBR is engineered for operators, competitors, and serious enthusiasts who demand the absolute best from a piston-driven platform.

Precision-Forged Construction

At the heart of the IC MK II is LWRCI’s Monoforge one-piece upper receiver with an integrated rail base — stronger and more rigid than standard mil-spec uppers. All LWRCI forgings are coined, meaning each component is struck twice in the die for exceptional dimensional accuracy and a superior surface finish that sets this rifle apart from the competition.

LWRCI Short-Stroke Gas Piston System

The patented LWRCI short-stroke gas piston system keeps combustion gases out of the action, dramatically improving reliability across a wide range of conditions and ammunition types — while reducing heat transfer and carbon buildup for easier maintenance. Paired with a Nickel-Boron coated bolt carrier, this platform offers unparalleled wear resistance, corrosion resistance, and permanent lubricity.

Cold Hammer-Forged Barrel

The 12″ heavy-profile barrel is Black Nitride treated and cold hammer forged with a 1:7 twist rate, precision torqued at the factory for consistent accuracy and stabilization across a wide range of bullet weights and types. This barrel is purpose-optimized for SBR-length performance without sacrificing reliability or precision.

Fully Ambidextrous Controls

The fully ambidextrous lower receiver features left- and right-hand accessible bolt catch and release, magazine release, and safety selector — making this rifle equally capable in either hand. The LWRCI Ambidextrous Charging Handle further ensures seamless operation for all shooters.

Ready-to-Run Features

• LWRCI Skirmish Back-Up Iron Sights — deployable and battle-proven
• LWRCI A5 2-Position Adjustable Gas Block — tune for standard or suppressed use
• LWRCI Advanced Trigger Guard — accommodates gloved operation
• LWRCI Ultra Combat Grip — ergonomic and aggressive for positive control
• LWRCI Compact Stock — optimized for SBR handling and packability
• Magpul PMAG 30 (5.56mm) — industry-standard reliability, included

NFA Item – Know Before You Buy

This rifle is classified as a Short-Barreled Rifle (SBR) and is regulated under the National Firearms Act (NFA). Purchase requires completion of the NFA transfer process, including ATF Form 4 submission, payment of the $200 tax stamp, and approval prior to transfer. It is the buyer’s responsibility to comply with all applicable federal, state, and local laws regarding NFA items. This item cannot be transferred to residents of states where SBRs are prohibited.

At VanTon Arms, we specialize in hard-to-find NFA items and premium firearms platforms. With competitive pricing and nationwide service, we make it easy to add a world-class rifle like the LWRC IC MK II SBR to your collection. Order online today or contact us with any questions about the NFA transfer process — we’re here to help every step of the way.