shouldazagged
Absent Comrade
Blue arrow-Steel hook that goes behind the trigger.
Green Arrow-Leather covered button. Depressing it moves a hinged lever that releases the "hook" on the front of the holster, red arrow.
The oustide of the clamshell has a steel loop that the hook catches to keep things closed.
There is a full length hinge and springs on the back side that force it to "pop" open when released.
Designed by a committee, was it?
