HK Extended Cocking Handle - HK21
Rubberized extended cocking handles for the older style HK21 firearms. This extended cocking handle makes a HUGE difference when trying to charge the HK21 firearm,...
Belt Box Adapter
A new custom-made adapter - allows you to use HK German factory HK21E belt boxes on the HK21 older style or original style belt feds. It is a drop-in design that will...