The LWRC M6IC IC-DI 5.56 16" (often referred to as the LWRC IC DI Standard) is a premium, duty-grade AR-15 rifle renowned for its exceptional build quality, unique engineering, and fully ambidextrous layout. While LWRC International is traditionally famous for its short-stroke piston systems, the IC-DI marks their highly successful foray into the Direct Impingement (DI) operating market. EXCELLENT CONDITION ORIGINAL BOX ONE 30-RD MAGAZINE INCLUDED Core Technical Specifications Caliber: 5.56x45mm NATO Barrel Length: 16.1 inches Barrel Twist: 1:7" RH Weight: 6.6 lbs (unloaded) Overall Length: 32" - 35.25" Gas System: Mid-length with a pinned gas block Muzzle Threading: 1/2x28 TPI Standout Engineering & Features Cold Hammer Forged Spiral Fluted Barrel: The distinctive spiral-fluted barrel is treated with a NiCorr finish. The fluting shaves off weight, speeds up cooling, and stiffens the barrel structure to help maintain accuracy under rapid fire. [1, 2, 3, 4] Monoforged Upper Receiver: The upper and handguard attachment system are integrated seamlessly. This creates a rock-solid, rigid platform for holding zeros with lasers and optics, though it does utilize a proprietary mounting layout. [1, 2] True Ambidextrous Lower Receiver: The lower receiver (marked M6IC) is highly coveted by shooters. Unlike standard ARs, it features mirrored controls on both sides-including the bolt catch/release, magazine release, and safety selector. [1, 2, 3] Keyless Bolt Carrier Group: The bolt carrier group features an integrated, one-piece gas key designed to completely eliminate the risk of gas key screws shearing or coming loose over time. The M-LOK Version: Highly recommended by testers. It features a modular IC DI M-LOK rail that accepts all universal M-LOK attachments natively. [1, 2, 3]