bottom-of-the-barrel reserves

barrel assembly (barrel group)

automatic heavy barrel rifle / heavy barrel automatic rifle

reserves

strategic reserves

stack up reserves

inferred reserves / resources

scale of reserves

scale of reserves to be held

The Higher United Nations Defense Enforcement Reserves (THUNDER)

ammunition in unit rolling reserves

pin down enemy reserves

bottom

bottom mine

bottom of the hull

bottom plating

bottom sweep

double bottom

double bottom space

inner bottom

outer bottom

bottom carriage

bottom end of stroke

bottom escape

bottom gear

bottom gun carriage

bottom half

bottom of a bull's eye

bottom plate

bottom rib of piston

bottom run (of tank track)

bottom sleigh

bottom surface of bolt