The Brownells Pivot Pin Installation Tool is a must have for any builder or gunsmith. It makes installation of the M16 pivot pin and its detent faster and easier. The Pivot Pin Installation Tool helps prevent the loss of detents. It works by holding the detent and spring in place while also serving as a slave pin when installing the pivot pin.


Pivot Pin Installation Tool dimensions: 1/4" diameter, 2.5” and 1.5” long legs