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provides a path for the fired bullet; its chamber holds the cartridges
contains the firing pin, spring, & extractor
enables the bolt to return after firing
buffer/ buffer spring
the end of the stock
supports the case at rest and during fire
enables withdrawal of the bolt to the chamber a round
charging handle
opening that permits the shell to exit round
ejection port
expels the shell from the ejection port
used to support the rifle with the support hand; acts as a heat shield from the barrel
hand guard
contain the magazine release, magazine well, trigger housing, and trigger components
lower receiver group
contains ammunition ready to be chambered
permits removal of the magazine from the firearm
magazine release
housing the magazine
magazine well
attachment of the barrel''s forward end that reduces the flash as burning powder escapes when the bullet exits the barrel
muzzle flash suppressor
blocks hammer from striking the firing pin; prevent firing
used to align firearm to the bullet''s point of impact
sights (front & rear)
metal loops affixed to the rifle/ carbine to which a carrying strap attaches
sling swivels
part that enables shoulder support during firing
enables separation of the upper receiver from the lower receiver and allows for fieldstripping & cleaning
take down pins
enable the firearm to fire when pulled
section consisting of the trigger, trigger spring, safety and all firing mechanism parts
trigger group
part of the frame that protects the trigger
trigger guard
houses the bolt assembly group
upper receiver group
x of y cards