The IC SPR variant utilizes the same Cold Hammer Forged spiral fluted barrel as the IC Enhanced. The SPR employs a low profile fixed gas block for the piston system and a longer 12 inch user-configurable modular rail system. Topped with LWRC's low profile Skirmish Sights the IC line of rifles is the latest evolution in the LWRCI 5.56 rifle.The IC-SPR is LWRC's flagship and most popular model. This is a great all-around 5.56 rifle that utilizes LWRC's most popular features; fluted barrel ambi controls and SPR modular rail system.Features: Tungsten Grey Cerekote High Quality Aluminum Alloy 7075-T65 Billet Construction delivers ultimate strength and stability. LWRCI Skirmish Back Up Iron Sights LWRCI Ambidextrous Charging Handle Patented LWRCI short-stroke gas piston system offers unparalleled reliability and easy maintenance LWRCI Enhanced Fire Control Group - Nickel-Teflon coated for a smooth crisp trigger pull with positive reset LWRCI Advanced Trigger Guard is oversized to allow for easy operation with gloves Black Nitride treated LWRCI heavy-profile barrel is precisely torqued in our factory to a consistent torque setting. Cold hammer forged 1:7 twist stabilizes a wide range of bullet types Nickel-Boron coated bolt carrier for unparalleled wear resistance corrosion resistance and permanent lubricity Fully-ambidextrous lower receiver controls include the bolt catch and release the magazine release and the safety selector LWRCI Ultra Combat Grip and LWRCI Compact Stock Magpul 5.56 PMAG 30/10 5.56 NATO