C Right Side View

M16 Receiver Drawings

Looking straight down at the top of the lower receiver compare it with drawing [A). The shaded >art on the drawing shows the metal that must be removed to make room for the M-16 auto-sear.

Drawing (B) indicates the metal removed From the left hand side of the lower receiver must jb cut out to a depth of .950. Drawing [C) shows the milling cut on the right side of the lower receiver to be only .M50 deep.

NOTE If. like most people, you don't have access to a milling machine, the work can be done using a dremeltm tool, by hand, with a rotary file. (Grinding will work but it would take forever because the aluminum cuttings will load up the stone and it won't cut.)

The next step is to drill the hole for the M-16 auto-sear pin. Refer to drawing (B). This hole drilled all the way through both sides of the lower receiver. This is best done with a drill press as the hole must be a true 90 degrees from the walls of the receiver.

M16 Auto Sear

hammer selector

Ar15 Hammer Parts DrawingsM16 Sear Hole

disconnector

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