1) PCP version of 1866 lever action in .22 & .25 cal. pellet, with removable rotary magazine that embeds flush into the breech, like the Lobo Mustang; or a tubular magazine similar to the vintage Crosman 99 and 400 rifles; or the Marocchi SM45.
No pellet cartridges to fiddle with. Power plant design similar to the 250Z
2) 1866 pump action pcp pellet
3) Electric BB version of 1866 lever action. Tubular magazine, no cartridges