You’re looking at the ArmaLite A10A4CBFX. This carbine takes the AR-10A a step further with free-float quadrail handguards specially fitted to a low profile gas block. This allows maximum hand placement choice and accessory locations when a longer handguard is placed on a shorter gas system upper half. The result is a hardworking, flexible firearm with astounding accuracy.
This AR-10A Carbine accepts third party polymer magazines. It is functionally identical to our traditional AR-10B carbine which takes only ArmaLite’s proprietary steel magazines. However, the AR-10A Carbine accepts polymer mags, not ArmaLite’s traditional AR-10 B’s steel mags.