STATES WITH PRE-PURCHASE TRAINING REQUIREMENT
1
Colorado is the only state with a mandatory pre-purchase training law for semiautomatic rifles
BOULDER KING SOOPERS VICTIMS
10
killed in the March 2021 shooting that accelerated Colorado's gun legislation push
SHARE OF MASS SHOOTINGS INVOLVING SEMIAUTOMATIC RIFLES
~77%
estimated share of high-casualty mass shootings (4+ killed) involving semiautomatic rifles, per Gun Violence Archive analysis
BRUEN DECISION YEAR
2022
Supreme Court's NYSRPA v. Bruen ruling shifted the constitutional test for gun laws to historical tradition