Silent M4A1-S carbine equipped with less capacious store than its counterpart without the silencer, but it provides a quieter shooting, less recoil and increased accuracy. Rainbow coloring was applied colored, waterproof paints, an Italian gunsmith and painter. He constantly drew sketches on his weapon, but none of them could meet the poor artist, and he decided to decorate their weapons with colored links. It was the only sketch that it granted.