REMINGTON ACTION TUBE FOR REMINGTON 7600 "SIX" SERIES Remington 7600 Action Tube (Six) - Factory Part Number F91439B. Factory action tube assembly used in the Remington 7600 "Six" generation pump-action rifle system. This component serves as the primary mechanical link between the fore-end assembly and the internal action bars, translating pump movement into controlled bolt travel for feeding, chambering, and extraction. Built to original factory geometry, it is intended for restoration of proper cycling function in rifles exhibiting wear, binding, or damaged linkage components. Fitment Notes: Designed for Remington Mfg: Remington