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Figure 8: Phantom view of a rifle action bolt. Figure 9: Line drawing showing how to measure the
slide rail height on a Colt .45 semi-automatic pistol.

exploded view of the famous Winchester Model You will also find line drawings and photographs
94 lever-action carbine. Notice that the parts are used throughout the course. Figure 9 is a line
arranged in the order in which they go into the drawing showing how to measure the slide rail
assembly. It is called an exploded view because height for a Colt .45 semi-automatic pistol.
everything has been “blown” out of the gun in a While line drawings are simple in appearance,
well-arranged “explosion.” they are very important. Remember, every illus-
tration in this gunsmithing course has a purpose.
Exploded views are very helpful to the gun-
That purpose is to help you understand the ma-
smith because they show how the various gun
terial you are studying. The pictures will show
parts are related to each other and how they fit
you what is inside the various components, how
together. Such illustrations are extremely use-
they are assembled, and the different trouble-
ful when trying to assemble or disassemble an
shooting and repair techniques required. The il-
unfamiliar firearm. You will be seeing many of
lustrations have been included to make things
these pictures as you continue through your
easier for you. Do not overlook them or their
course. Firearm manufacturers use many such
descriptive captions.
illustrations in their service and parts manuals.
There is another type of illustration you should
understand — the phantom view. Figure 8 is a
phantom view of a rifle action bolt. In this il-
lustration, various parts are drawn as though
they were transparent. That is, they are drawn as
though you could see through them.

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