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|  MIL-B-70511B (AR)
the close of each day's firing, the rifle shall be protected
against corrosion.
4.5.4.1.1 Lubrication. Rifles shall have been lubricated
using lubricant in accordance with MIL-L-63460 (CLP). Apply a
light coat of oil to all surfaces of the bolt carrier group. (Do
not apply excessive oil in the bolt firing pin recess.) Apply a
moderate coat of oil on all firing mechanism components in lower
receiver.
4.5.4.1.2 Cleaning. Rifles shall be cleaned with a cleaning
solvent in accordance with MIL-C-372 and the following
procedures:
a.
Barrel. Brush bore thoroughly with a brush soaked in
cleaning solvent. Brush the bore from the chamber to
the muzzle using straight through strokes. Do not
reverse direction of brush until it extends beyond
the muzzle. Continue brushing until the bore is
covered with solvent. Dry the bore by pushing clean
dry swabs through the bore. Continue until the swab
comes out clean and dry. Clean dry compressed air
may be used for preliminary drying.
Barrel chamber. Insert the cleaning rod section and
b.
chamber brush that has been dipped in cleaning
solvent into the chamber and use reciprocating plunge
strokes and rotational 360 motions. Dry chamber
with cleaning swabs.
Barrel extension. Using a small bristle brush that
c.
has been dipped in cleaning solvent, clean the
locking lugs in the barrel extension. Remove excess
cleaning solvent.
With the exception of the bolt
Bolt carrier group.
d.
rinqs, extractor spring and the ejector, disassemble
all parts, wash these parts in cleaning solvent and
remove all carbon deposits. Particular attention
should be given to the areas under the face of the
extractor and behind the three rings on the bolt.
Remove excess solvent and dry.
e.
Upper receiver.
Clean with cleaning solvent and
remove all powder fouling. Clean the protruding gas
tube using & bore brush attached to a section of the
cleaning rod. Saturate the brush with cleaning
solvent. (Do not use any type of abrasive material
to clean the gas tube. Remove excess cleaning
solvent.)
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