automatic firearm

常见例句

Automatically ejecting a shell and chambering the next round from the magazine; automatic or semiautomatic. Used of a firearm.
自动发射一颗炮弹，并将下一颗炮弹从弹仓中填入膛中的；自动的或半自动的用于火器。
odict.net

Ms. Peters, who lobbied for stricter gun laws in Australia, credits their newly established 28-day waiting period for a firearm purchase and a ban on semi-automatic weapons for a 50% reduction in homicide and suicide rates.
FORBES: Why Gun Regulation Is Uncivilized
They wanted to whitewash a firearm category with Orwellian zeal from the show because they deem these semi-automatic rifles to be too militaristic for civilian use.
FORBES: Eastern Sports and Outdoor Show: What Postponement of the U.S.'s Largest Gun Show Says About America