Manual

12
Stock Adjustment Latch – Depending on the configuration of your rifle, pulling down on
the rear of the stock adjustment latch (E-Mod) or depressing the stock latch (CTR or MOE)
allows the stock to telescope or collapse to one of six positions allowing the user to configure
the length of pull.
Top Retaining Screws – ese are captured screws (they will not come out when screwed all
the way out) that allow the user to remove his top rail for access to the gas piston and barrel
of the weapon.
Ejection Port Cover – e user can manually close the cover to prevent dirt and debris from
entering the action of the weapon. e cover opens automatically on firing or cycling the
action.
2.0 Cycle of Operation
e cycle of operation begins with a Condition 1 weapon. At the beginning of the cycle of
operation the weapon is said to be “in battery” meaning all recoiling components are forward
and the bolt is locked into the barrel extension.
e cycle of operation in the semi-automatic mode:
Firing- By depressing the trigger the sear is disengaged from the hammer allowing it
to be driven by the hammer spring to strike the firing pin.
e firing pin strikes the primer, firing the chambered round.
Unlocking- Propellant gasses are tapped off at the gas port and travel trough the gas block
to the nozzle. Exiting the nozzle the gas drives the piston cup back from the
nozzle in turn driving the intermediate rod and operating rod to strike the
carrier key. Total travel of the piston system is approximately 0.6 inches.
is initiates the rearward movement (recoil stroke) of the bolt carrier and bolt.
As the bolt carrier travels to the rear the bolt rotates thus unlocking from the
barrel extension.
Extracting- As the bolt and bolt carrier continue through the recoil stroke the expended
cartridge is drawn from the chamber by the extractor.
Ejecting- Once the expended cartridge is clear of the chamber it is ejected from the
weapon by the spring loaded ejector.
Cocking- As the bolt carrier group continues to the rear it cocks the hammer which is
initially retained by the disconnector. As the shooter disengages the trigger,
the disconnector releases the hammer allowing it to be captured by the trigger
(resets).