schematic for a laser sight, aka schematic for a laser sight, laser, sight, and schematic

Another weapons mod plan from the Jiffy-Tyme conglomorporation. This plan will let you or your loved one build a high-quality laser sight modification for you weapon. Some assembly required.

It tells you how to make a laser sight with the following components:
1 - circuit board
1 - broken battery pack
1 - short steel pipe
1 - class III laser
1 - firearm sight assembly
Making this would take good familiarity with craft.
In the upper right corner is a note: 'First discovered by Dr. Rick.'

It weighs about 100 grams. It is a electromechanical schematic. You think it might fetch about $2 on the market.