Directly descended from the rifles developed by LWRCI to meet the requirements for the U.S. Army Individual Carbine program, the IC-SPR is built for high performance. 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 their low profile Skirmish Sights, the IC line of rifles is the latest evolution in the LWRCI 5.56 rifle. The IC-SPR is their 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.