https://www.nytimes.com/live/2021/03/23/us/boulder-colorado-shooting
..”A police affidavit made public on Tuesday said that last week he bought a Ruger AR-556 semiautomatic pistol — essentially a shortened version of an AR-15 style rifle, which fires the same small-caliber, high-velocity ammunition, first developed for battlefield use. Statements from the police and the charging documents did not make fully clear what models of weapons he used in the attack, and whether the Ruger was one of them.
The suspect’s identity was previously known to the F.B.I. because he was linked to another individual under investigation by the bureau, according to law enforcement officials.”...
FBI always to be a step slow on investigating the muslim terrorist element living amongst us but is quick to investigate those that participated in the Capital “walk through”. I have zero respect for anyone working for the FBI after what we have learned the past number of years.