- 1836 — The Patent Arms Manufacturing Company of Patterson, New Jersey is chartered by NJ legislature. An upstart whippersnapper from Hartford, 22-year old Sam Colt, was given a commission for each gun sold in exchange for his share of patent rights.
- 1917 — The third round of trials for the second Huot automatic rifle prototype, firing 11,000 rounds (half Dominion Cartridge Company, half Dominion Arsenal), begin in Quebec.
- 2001 — Charles Andrew Williams opens fire at Santana High School in Santee, California. The school sends in an unarmed “trained campus supervisor” to negotiate with Williams, which results in the supervisor’s death. An armed parent, who was dropping off his daughter at the school, halted the rampage and kept Williams at bay until police could arrive.
- 2008 — The United States National Research Council released a report that concluded that a national database of ballistic markings is unworkable and that there is not enough scientific evidence that, "every gun leaves microscopic marks on bullets and cartridge cases that are unique to that weapon and remain the same over repeated firings".
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