WHAT DOES COLT SMG UPPER MEAN?

The common SMG takes advantage of a 10.5 inch barrel While using the common “fowl cage” flash suppressor and regular carbine handguards. The barrel contains a chrome lined bore and chamber. The barrel can also be produced in 16-inch length to the business/LE carbines.56 bullet weights, in addition to a corrosion-resistant QPQ finish. You may le