AR-15- a 30-round magazine, possible to purchase after-market magazines with as many as 100 rounds.

Unlike the M16, which is fully automatic, the AR-15 is “semi-automatic,” meaning a person has to pull the trigger for every shot. Most AR-15-type rifles are sold with a 30-round magazine, but it is possible to purchase after-market magazines with as many as 100 roundsJun 12, 2016