The Blackhawk Reservoir Replacement Cap (672562BK, 672562CT and 672562OD) make switching your reservoir to a different color pack no problem. These caps will fit any reservoir whether it is an internal or external fill port. They also work as replacement caps for Nalgene bottles. Three colors available to match all camo patterns.
Internal or external fill port
Fit any BLACKHAWK! reservoir
can be used to replace caps for Nalgene® bottles.