<P> AR - 15 fixed stock showing the buffer and the buffer spring </P> <Li> <P> AR - 15 buttstock showing cleaning kit compartment door </P> </Li> <P> AR - 15 buttstock showing cleaning kit compartment door </P> <Li> <P> AR - 15 cleaning kit stowed in buttstock </P> </Li>

What type of ammo does an ar-15 use