<P> The M16 rifle , officially designated Rifle , Caliber 5.56 mm , M16 , is a United States military adaptation of the ArmaLite AR - 15 rifle . The original M16 was a 5.56 mm automatic rifle with a 20 - round magazine . </P>
<P> The M16 rifle , officially designated Rifle , Caliber 5.56 mm , M16 , is a United States military adaptation of the ArmaLite AR - 15 rifle . The original M16 was a 5.56 mm automatic rifle with a 20 - round magazine . </P>
what is the military version of the ar-15
what is the military version of the ar-15
The M16 rifle , officially designated Rifle , Caliber 5.56 mm , M16
The M16 rifle , officially designated Rifle , Caliber 5.56 mm , M16