NYC shooter Shane Tamura built AR-15 used in deadly rampage piece-by-piece — and his boss supplied a key part: sources

Source: New York Post

The assault rifle used in mass shooter Shane Tamura’s deadly rampage at a Park Avenue skyscraper was assembled piece by piece – with the critical part purchased by his boss, according to officials and sources. The psycho’s supervisor at the Horseshoe Casino in Las Vegas allegedly supplied the Palmetto State Armory lower receiver for the AR-15 that Tamura used to kill four people, including an NYPD cop, sources told The Post. The lower receiver – which houses the trigger assembly, magazine well, and pistol grip – is the only AR-15 part classified as a firearm under federal law, and it requires a background check to buy.