A common question that I have been getting is… What is the small screw for that is seen on some of the Colt monolithic/modular upper receivers?
In the video below, I explain to you what the screw is for.
A common question that I have been getting is… What is the small screw for that is seen on some of the Colt monolithic/modular upper receivers?
In the video below, I explain to you what the screw is for.