The 5.1K Hi-Capa is much like the standard Hi-capa 5.1 model in size with the only major difference being the design.
The main difference of the Hi-capa 5.1K is the vented slide giving it a more modern design, the vents also make the slide lighter, some like it and some don't
You sill get the same features with the WE Hi-capa 5.1K so as a full metal slide and frame, blow back action and a double stacked mag.
Model: 5.1K Hi Capa
Fire Selector: Safe, Semi
Magazine Capacity: 30 Rounds
FPS: Gas and weather dependant
Powered By: Gas
Exterior Construction: Metal slide and frame
Internal Construction: Metal internals
Hop Up: Adjustable