The Barrel is another budget selection from Foxtrot Mike, and it is actually sixteen inches extended. Very long for any 9mm, but a rifle can be a rifle and I want that 16-inch barrel to make it so. The Foxtrot Mike barrels are remarkably simple. The modified near array aperture https://colt-9mm-upper67407.blogdigy.com/a-review-of-colt-10-5-inch-9mm-smg-upper-receiver-assembly-40382383