11-10
Student Notes:
PART
ACTION
Bolt carrier group
1.
2.
3.
4.
5.
Dip the bore brush in the bore cleaner, and clean the inside of the carrier key.
Dry with a pipe cleaner
Clean the locking lugs, bolt, extractor ejector, and bolt rings with the bore brush.
Remove any accumulation of dirt, carbon, or oil from the firing pin and the external and
internal surfaces of the bolt and bolt carrier.
Wipe all parts dry; then lubricate them with the recommended lubricant.
Upper receiver group
1.
2.
3.
4.
Coat the bore brush or a swab with bore cleaner; then remove the powder fouling
collected on the group.
Clean the protruding gas tube inside and outside.
After cleaning these components, wipe them dry.
Apply a light coat of the recommended lubricant.
Lower receiver group
1.
2.
Coat the bore brush or a swab with bore cleaner; then remove dirt, carbon, and sand from
the lower receiver group.
Dry and apply a light coat of the recommended lubricant.
Ammunition magazines
1.
2.
3.
4.
5.
After removing all cartridges from the magazine, depress the spring steel lock band on
the bottom of the magazine, using the nose of a cartridge.
Slide the base until it is free of the tabs, and remove it from the magazine body.
Remove the magazine spring and follower, but do not remove the follower from the
spring.
Clean the exterior and interior of the magazine with a dry rag or swab.
Apply a light coat of the recommended lubricant to the magazine spring only; otherwise,
keep the magazine dry.
Assemble the magazine in reverse order and test it to ensure that the follower is free
to move without binding.
If the magazine and the ammunition in it gets wet, be sure to wipe them dry as soon as
possible.
When left wet, both the magazine and the ammunition can become corroded and are
dangerous to use.
Remember not to use oil or grease on any cartridge. If you do this, injurious abrasives
can collect in the weapon or produce excessive and hazardous chamber pressures
when the weapon is fired. Whenever practical, ammunition should be stored under
cover. This applies particularly to tracer ammunition.
