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Cheap Laser Sight

This is about as simple as it gets. I made a cheap, reasonably accurate laser sight for my Glock out of a few spare parts and a spare scope ring.

You can probably use the same concept for other guns and other homemade accessories.

An excellent alternate to the laser sight would be a tactical flashlight – that would fit quite nicely in the scope ring!


The Glocks have a mounting “rail” underneath the barrel in front of the trigger. Accessories (which all cost a small fortune – at least the “authentic” ones) have clamps that fit this rail.

It’s not possible to purchase just the mount (the mounts are all part of the accessory – be it laser sight, tactical flashlight, etc) so we need to improvise. These scope mounts (for a Weaver rail) are pretty much just the right size. The ring itself is removable.

All we need to do is put our chosen accessory onto or into the mounting ring in some way, then we can clamp it onto the Glock’s rail, tighten, and we’re set.

If you’re making your own stuff, you may be lucky enough to fit your chosen accessory right into the scope ring and tighten. If not, the ring can be removed and you may be able to screw your accessory on with the help of the screws and holes.

The laser pointer I had hanging around wasn’t going to work with either of those methods, so I did something else.


Here you can see the laser pointer test-mounted with an elastic band. It fit pretty well, so I decided to use that mounting location.

I removed the elastics and mixed up some 2 part epoxy putty. It’s available at hardware stores (around here, anyway). It hardens slowly and stops being workable in a few hours. Within 12 hours it is cured.

This allowed me to putty in the laser pointer and roughly adjust it upwards so that it met my sights on a target. Then I made another adjustment about 20 or 30 minutes later. After that, it was pretty much sighted in and the putty was setting nicely. Note, of course, that this means the laser sight can no longer be adjusted as the putty is hardened.

The sight assembly can then be put on and taken off by attaching and detaching the scope mount ring.


I either touch the ON button with my finger or use an elastic to hold it down. I haven’t decided if I will glue the ON button on permanently and insert batteries for “ON”, or install an On/Off switch, or just leave it as it is.

Well, it works pretty well for what it is, though it’s not a precison targeting device. But it is handy for aiming “from the hip” or otherwise when not using the real sights.

After all, using the laser sight as a precision targeting system is only maybe half the fun of having one.


The rail mounting is not exactly tight – seems it tapers inwards a little towards the muzzle of the gun. This means the sight can eventually loosen and slide forwards fairly easily (for example, when quickly swinging the gun around).

I solved this with the simple and ugly method (hey, the pointer’s already ugly) of looping a piece of wire through the rear keychain hole of the laser pointer and the trigger guard like a twist-tie.

Since I use it only for target shooting, I used a zip strap on the pointer to permanently hold the on button down. I now turn it “off” and “on” by removing and replacing the batteries. An external switch would be a more flexible option.