Created from the ground up around US-manufactured Glock magazines, the IC-9 is chambered in 9mm featuring the same ambidextrous controls and performance attributes found in LWRCIs luxury gas-piston AR lineup. Constructed of advanced aluminum and steel alloys, protected with hard-coat anodizing, ferritic nitrocarburization and nickel-boron surface treatments, the IC-9s MonoForge Upper Receiver with integrated rail-base is lighter and stronger than standard pattern uppers. Coined Forging are struck, heat-treated and struck again for precise dimensional accuracy and superior surface finish. Accepts a 33rd or 10rd OEM Glock magazine.