Manual
Rev F www.lmtdefense.com Page
18
CAUTION !..
Some cleaners can cause damage to your firearms. You should avoid prolonged solvent
immersion and prolonged ultrasonic cleaning of your firearm. Choice of solvent should be restricted to those
products specifically developed for firearms maintenance. Damage to a firearm’s finish may occur if these
cautions are ignored. Ammoniated solvents or other strong alkaline solvents should not be used on any Lewis
Machine & Tool Co. firearm. As a rule of thumb, if you would be comfortable applying the solvent of your
choice to the finish of your automobile, it would probably be safe for use on your firearm.
After the cleaning, there may be some residue in both the barrel and action that works out and becomes
apparent within 24-48 hours. This can be removed with a bristle brush and a light reapplication of powder
removing solvent after which the oil film should be re-established on all surfaces.
Cleaning is essential to ensure the proper functioning of your firearm.
Your firearm is a precision instrument. To ensure reliable function it is necessary to follow a routine
maintenance procedure. After firing your firearm, be sure to unload it following the procedure outlined in the
section entitled “Inspecting Your Firearm” before performing any cleaning or maintenance procedure.
NEVER MANIPULATE, ADJUST OR CHANGE ANY OF THE INTERNAL COMPONENTS
OF YOUR FIREARM UNLESS SPECIFICALLY DIRECTED TO DO SO IN THIS MANUAL. IMPROPER
MANIPULATION OF ANY INTERNAL COMPONENT MAY AFFECT THE SAFETY AND RELIABILITY OF
YOUR FIREARM AND MAY CAUSE SERIOUS INJURY OR DEATH.
ANY MAINTENANCE OR SERVICE NOT SPECIFIED IN THIS MANUAL MUST BE
PERFORMED BY A QUALIFIED GUNSMITH USING GENUINE LEWIS MACHINE & TOOL CO. PARTS. IF
YOU DO OTHERWISE, IMPROPER FUNCTIONING OF YOUR FIREARM MAY OCCUR AND SERIOUS
INJURY OR DEATH MAY RESULT.
If your firearm will be used or stored in a cold climate, be sure to use an oil of appropriate weight so that it will
not congeal in the cold temperatures.
CLEANING AND MAINTENANCE OF PISTON SYSTEM (FIGURE 7E)
The piston system is designed to work despite carbon build-up and dirt, and concentrate any operational
debris near the gas block, away from the user. However, regular cleaning and maintenance will help insure
your weapon remains at its optimal performance. All surfaces can be cleaned with CLP or an equivalent
solution. A bore brush may be used to remove build-up from the interior of the gas plug, and drawn across the
small gas hole to clean out build-up there. A cloth may be used to wipe down the surfaces of the piston.
It is not advisable to remove the gas rings from the piston.