Manual

Mech-Tech CCU Operation & Maintenance
Manual - 1911 Model
1)
SAFETY ADDENDUM
This is a safely addendum to follow page 1. Carefull
reading of this manual will reveal that the bolt
must be
retracted before any attempt to remove the pistol lower unit.
There can occur a unique circumstance where a cartrige gets
stuck in the chamber and the bolt cannot be retracted. The
stuck cartridge may not be seated fully into the chamber and
this will prevent the fireing of the CCU because the bolt is not
fully forward. The reason that the bolt cannot be retracted in
this case is that the extractor (Fig.5) claw is engaging the case
rim. When this situation occurs do not try to remove the
pistol lower unit because the stuck cartride may fire as the
lower is removed! The correct way to deal with a stuck car-
tridge case is to carefully lift the extractor claw outward far
enough to release its’ grip on the cartridge and then move the
bolt to the rear and lock it to the rear. This delicate operation
is best performed by a competent gunsmith. Care must also
be exercised in the subsequent removal of the stuck cartridge
- also a job for a competent gunsmith. Remember there is
always the possibilty that the stuck cartridge may fire while
working to release the extractors’ grip. Be certain to position
the CCU muzzle such that an unintentional discharge of the
cartridge will not pose a hazard to persons or property.
Note to gunsmith: a 6” piece of 14ga (0.033”) music wire
with a 90 degree x 1/8” “L” bent at one end can be used to pull
the extractor nose outward away from the cartride rim. Also a
pair of slender jaw needle nose pliers can do the trick. It is
adviseable to hold the CCU in a soft jaw vise fixture in the area
of the foregrip to allow for both hands to be free to perform
the release. An assistant is helpfull if the vise is unavailable.
Again we stress the importance of safelty - be certain to orient
the muzzle so that an unintentional discharge will not harm
persons or property!
5) Addendum
It is highly recommended that this entire manual is read and
understood before operating or disassembling the CCU. If there
are questions or any area where you feel clarity is lacking please
call the manufacturer for advice at 1-866/433-2122 toll free.
NOTE: the 1911 style pistols have a frame mounted safety lever
on the left side. The CCU allows this safety to operate if the lever
is the same as a stock Colt original pattern. Extended style safety
levers such as are available from aftermarket sources and are
found on later manufactured 1911 style pistols will not func-
tion with the CCU. The last round hold-open feature in 1911’s
also does not function with the CCU installed. With these excep-
tions the CCU will function normally.
Remove all ammunition from the CCU when assembling/dis-
assembling pistol lowers to/from the unit. Always point the muzzle
in a safe direction. Observe all safety precautions. Use only low-
ers with factory stock serviceable components. Use only factory
ammunition of the caliber for which the CCU has been designed.
Wear approved ear and eye protection when firing the unit. Obey
local, state and Federal laws at all times.
Wear proper eye protection during disassembly/reassembly.
After disassembly clean and lubricate all components before reas-
sembly. Do not modify any CCU components.
Mech-Tech Systems Inc.
3243 US Highway 93 South
Kalispell, MT 59903