Smears of blood had been seen on the assault rifle Shane Tamura used throughout his lethal rampage inside 345 Park Avenue on Monday evening, in response to a photograph obtained by The Put up.
The rifle is a Palmetto State Armory AR-15 assault rifle in .223-caliber.
Gun retails for about $420.
The 27-year-old from Las Vegas killed an NYPD cop and no less than 4 others, and injured a number of others.
