There are currently five 7.62mm cartridges in service.
M80 NATO 7.62mm ball cartridge: The M80 is the standard 7.62mm ball cartridge. The M80 can be identified by its unpainted (copper) tip.
M276 NATO 7.62mm ball/dim tracer cartridge: Designed to be used with night vision devices, the M276 dim tracer is a reduced visibility alternative to the standard, high visibility M62 tracer. The M276 can be identified by its purple painted tip.
M62 NATO 7.62mm ball/tracer cartridge: The M62 is the tracer variant of the M80. It is, in all respects, identical to the M80. The M62 can be identified by its orange painted tip.
M82 NATO 7.62mm blank firing cartridge: Designed for use with training simulators, the M82 has no projectile and contains a reduced powder charge. The M82 can be identified by its crimped and sealed cartridge opening in place of a projectile.
M118 7.62mm long range special ball cartridge: Designed for use in long range sniper applications where a high degree of accuracy is required, the M118 is essentially a civilian match grade bullet adapted for military use. Externally, the M118 is identical to the M80 7.62mm ball ammunition.