THE BASIC PRINCIPLES OF COLT SMG UPPER RECEIVER

Colt Firearms Colt's Producing Corporation, formerly Colt's Patent Firearms Producing Business is definitely an American firearms maker, Established in 1855 by Samuel Colt.  It is the successor Company to Colt's earlier firearms-building initiatives, which started out in 1836. Colt is recognized for the engineering, manufacturing, and marketi