Quantum Cloning: A Colt Model 601 Brought Back To Life | American Rifleman
Early last year, the Puerto Rican Police Bureau demised and liquidated some of its old stock of rifles as parts kits for private purchase. These kits give the average enthusiast the ability of building up a clone of one of the earliest evolutions of the AR-15 platform, the Colt Model 601.
Source: americanrifleman.org