Rather than being an afterthought, the short-stroke piston operation is foundational to the LWRCI M6IC-A5.Īmong the standout features on the new A5 is a machined Monoforge upper receiver with an integrated rail base that is lighter and stronger than previous two-piece designs. What LWRCI and others have done, however, is engineer the AR concept and components specifically for use with a short-stroke, gas-piston operating system. Ultimately this led to issues like carrier tilt and damage to the lower receiver. Early on, several manufacturers tried to take Stoner’s design and modify it for use with a piston system, but without considering the effects this would have on components that weren’t designed for that purpose. Historically, the other problem has been the way in which the piston operating system has been applied to the AR platform. For the weekend shooter, the cost may not be necessary but could nonetheless be desirable. For the warfighter, reliability is obviously paramount, and the cost is often negligible in comparison to the value gained. cartridge.įor some people the increase in cost is worth it, particularly when the mission profile includes the discharge of high volumes of ammunition and minimal time for cleaning. Some have pointed out that the piston system increases felt recoil, but the difference is negligible, especially with the 5.56 NATO/.223 Rem. The tradeoff, of course, is that piston-operated platforms typically cost more than their direct gas-impingement counterparts. Combined with LWRCI’s nickel-boron coating and the superalloy components used in the piston system, this means the action stays cleaner, longer, thus reducing carbon buildup that leads to malfunction. The beauty of the short-stroke, gas-piston operating system, however, is that gases from the spent cartridge move through the gas block where they strike a piston-the piston then drives the bolt carrier rearward while the dirty gases exit the firearm clear of the action itself. If nothing else, this necessitates more regular weapon cleaning. This causes carbon buildup in the action and eventually contributes to functionality issues. One of the known issues with the direct gas-impingement system developed by Stoner is that hot gases and carbon from the discharged cartridge are dumped into the action of the rifle where they strike the gas key, pushing the bolt carrier rearward against the buffer spring and thus cycling the action. Because the A5 is duty built for tip-of-the-spear military personnel around the world, durability and functionality are non-negotiable. This makes the LWRCI M6IC-A5 highly reliable even in the worst conditions. The short-stroke, gas-piston system is constructed with aerospace-grade superalloys that can withstand extremely high temperatures without losing their strength or becoming fatigued. As with the original Individual Carbine design, the hallmark of the A5 is LWRCI’s patented short-stroke, gas-piston operation, which is designed to improve upon the original direct gas impingement system developed by Stoner in the 1950s. One of the latest rifles from the manufacturer is the LWRCI M6IC-A5 chambered in 5.56 NATO and available in OD Green, which, like the Incredible Hulk, is a highly evolved and technologically advanced version of a Bruce-Banner-like classic, Eugene Stoner’s AR-15/M16. Army.Īlthough the Individual Carbine competition was cancelled in 2013, that original research and development led to a whole family of LWRCI rifles that are produced under the Individual Carbine (IC) nomenclature and sold to everyone from warfighters and law enforcement to hardcore civilian shooters. The company was founded to pursue the development of a short-stroke, gas-piston-operated firearm that would replace the M4 as the main service weapon for the U.S. They say competition breeds innovation, which couldn’t be more true than it is for LWRC International (LWRCI). Boasting a patented short-stroke gas-piston operation, the LWRCI M6IC-A5 is a rugged-built rifle ready to answer the call of duty.
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