In this January 11, 2018 photo, Washington Rick Wyant, supervisor of the forensic firearms unit at the Washington state Patrol crime laboratory in Seattle, test fires a semi-automatic rifle that has been fitted with a so-called bump stock device to make it fire faster. Photo: AP

‘Here’s to freedom’: maker of rapid-fire device, used in Las Vegas massacre, offers discount as tribute to Trump

Bump stocks allow semi-automatic rifles to fire like fully automatic machine-guns

Topic |   Las Vegas mass shooting

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In this January 11, 2018 photo, Washington Rick Wyant, supervisor of the forensic firearms unit at the Washington state Patrol crime laboratory in Seattle, test fires a semi-automatic rifle that has been fitted with a so-called bump stock device to make it fire faster. Photo: AP
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