Manual

15
Detailed cleaning techniques…
NOTE: The procedures below describe cleaning with a
standard multi-piece rod cleaning kit. Other commercial
cleaning kits may include alternate cleaning instructions which
may be just as effective.
CLEANING THE BORE: The bore of your Bushmaster rifle has
lands and grooves called rifling. Rifling makes the bullet spin very
fast as it moves down the bore and down range. It is difficult to
push a new, stiff bore brush through the bore. You will find it
much easier, and more effective, to pull your bore brush through
the bore. Also, because the brush will clean better if the bristles
follow the grooves (this is called tracking), you want the bore
brush to be able to turn as you pull it through. Always clean from
from chamber toward the muzzle. This is how it’s done:
1.) Swab out the bore with a patch moistened with “CLP”.
2.) Attach three rod sections together but leave each one about
two turns short of being tight.
3.) Attach the bore brush but leave it two turns short also.
4.) Point muzzle down. Hold the upper receiver in one hand while inserting the end
of the rod without the brush into the chamber. Guide the rod carefully through the
bore. CAUTION: do not let the rod or its threaded end scratch the Bore or Firing
Chamber. About 2 - 3 inches of the rod should protrude out of the muzzle.
16
Detailed cleaning techniques (continued)…
5.) Attach the handle section of the cleaning rod to the end of the rod sticking out of
the muzzle.
6.) Pull the brush through the bore and out the muzzle. You should be able to see the
rod twisting as you pull it - this is the brush “tracking” in the rifling.
7.) After one pull, take off the handle section and repeat the process. After three or
four pulls, the three rod sections and the bore brush may become screwed tightly
together. Loosen them up and repeat the process.
8.) Send a patch through the bore occasionally to clean out any debris that the brush
is getting loose. Just replace the bore brush with the rod tip (patch holder) and a
wet patch. Pull it through. If you leave the rods loose, the patch will also “track” in
the rifling. Always have the bore wet with cleaner before pulling a brush through.
Cleaning the upper receiver…
NOTE: Check to ensure that there is no
looseness between the barrel and the
upper receiver - if you detect any
movement by twisting with your hands,
the barrel nut must be re-torqued. Bring
the rifle to a qualified gunsmith.
1.) Using a “CLP“ product, clean all areas of powder, corrosion, dirt and rust.
Never use a wire brush or any type of abrasive to clean the aluminum upper
receiver - you'll scratch and damage the finish.
Never reverse the direction of
the bore brush while it is in the bore.