This undated photo provided by the Bureau of Alcohol, Tobacco, Firearms and Explosives, shows the FRT-15 made by Rare Breed Triggers, an after-market device for AR-15-style rifles that allows them to ...

(AP) — The internet videos are alarming to some, thrilling to others: Gun enthusiasts spraying bullets from AR-15-style rifles equipped with an after-market trigger allowing them to shoot seemingly as ...

The internet videos are alarming to some, thrilling to others: Gun enthusiasts spraying bullets from AR-15-style rifles equipped with an after-market trigger allowing them to shoot seemingly as fast ...

Another rapid-fire gun device that is worrying federal government officials is being put to the test in lawsuits in New York City and Texas. The forced-reset trigger by Rare Breed Triggers can make an ...