Knight's Armament SKU: 20214 | UPC: 819064012177 $401.94 Out of stock Description KAC-Knight's Armament Medium FF RAS, 10 3/8" (20214) The KAC Medium Free Float RAS (Rail Adapter System) features full length mil-spec M1913 Picatinny rails at the 12-, 3-, 6-, and 9 o'clock positi...