Assertion: automatic rifle | /r/ObjectUse | used by mass shooters
Facets:
value: frequently
type: TEMPORAL
Source sentences:
text: A Michigan resident can purchase an AR-15 — a semi-automatic rifle frequently used by mass shooters — in anywhere from less than an hour to a few days, through a federally licensed dealer, by answering a questionnaire and waiting for a federal background check to clear with the FBI through the National Instant Criminal Background Check System.
text: Studies do suggest however, that when semi-automatic rifles are used, particularly in a mass shooting, the number of casualties in a single incident does tend to increase.