Manual

Functioning
At the start of this cycle the weapon is assumed
already loaded, full magazine inserted, the safety off
and ready to fire.
When the SUB rifle's trigger is pulled, the trigger axis
is rotated forward together with the trigger bar which
engages the sear. The sear disengages the cocked
hammer which rotates forward to strike the firing pin
which in turn hits the cartridge primer igniting the
powder charge.
The hot expanding powder gas drives the bullet
forward through the barrel and simultaneously drives
the relatively heavy bolt backwards. This is called
blowback operation.