The LWRC IC MKII SBR in Flat Dark Earth is a 5.56 NATO short-barreled rifle built on the piston-driven Individual Carbine platform, with a 10.5-inch barrel and a compact stock. LWRC redesigned the upper for this generation around a one-piece Monoforge receiver and an M-LOK handguard, and the paddle-style gas block now sits inside the rail where it is easy to reach. The short-stroke gas piston is easy to maintain, and a Magpul 30-round PMAG and LWRC Skirmish back-up iron sights come with the rifle. Controls are fully ambidextrous, so the rifle runs the same from either shoulder. It suits a short carbine for vehicles, tight spaces and suppressed shooting, with a finish that stays out of the black-rifle rut.

Key Specifications

• The chambering is 5.56 NATO, the standard carbine cartridge with the widest ammunition choice.
• The barrel is 10.5 inches of cold hammer forged, spiral-fluted heavy-profile steel with a 1:7 right-hand twist, a rate that stabilizes a wide range of bullet weights.
• The muzzle is threaded 1/2×28, the standard pitch for flash hiders, brakes and 5.56 suppressors.
• Operation is a short-stroke gas piston with a two-position adjustable gas block inside the rail, so you can set it for suppressed or unsuppressed fire.
• The controls are fully ambidextrous, covering the safety selector, bolt catch and release, magazine release and charging handle.

Frequently Asked Questions

Can I switch the gas setting for a suppressor? Yes. The paddle-style, two-position gas block sits inside the handguard rail and is meant for changing between suppressed and unsuppressed operation.

Do I need ATF approval to buy this? No. As of October 9, 2026, ATF no longer requires Form 4 approval, registration or a tax stamp for short-barreled rifles. It transfers on a Form 4473 with a background check through a Class 3 (SOT) dealer. State and local laws still apply. Taking an SBR across state lines still requires an approved ATF Form 5320.20.

Buy the LWRC IC MKII SBR 5.56 NATO, 10.5-Inch, Flat Dark Earth

As of October 9, 2026, this short-barreled rifle transfers on a Form 4473 with a background check at your Class 3 (SOT) dealer, with no Form 4 or tax stamp; state and local laws still apply. Order through LWRC‘s short barrel rifles lineup and our Lubbock, Texas team will handle the transfer.