Tech Force TF90 dot sight

by Tom Gaylord, a.k.a. B.B. Pelletier

Tech Force 90 dot sight
Tech Force TF90 dot sight

This report covers:

• Tech Force TF90 dot sight
• Description
• How does a dot sight work?
• Parallax?
• Easier to use than open sights
• Not the latest and greatest

Tech Force TF90 dot sight
I was right there when this Tech Force TF90 dot sight was being designed. I watched it evolve over several years of development, as each new model was revealed at successive SHOT Shows. I even tested a forerunner of this sight in the 1990s for The Airgun Letter by mounting it on a Beeman P1 pistol.

The Tech Force TF90 was developed by Compasseco, who used a Chinese optics factory that also made sights for their military. According to Duane Sorenson of Compasseco, the optics and manufacturing details of this sight were superior to similar Chinese-made dot sights because of who built it. In the 1990s Compasseco did a lot of business in China and had enough influence to get products designed to their specifications, and Duane was especially proud of this sight.

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Umarex MORPH 3X CO2 BB pistol and rifle: Part 5

by Tom Gaylord, a.k.a. B.B. Pelletier

Part 1
Part 2
Part 3
Part 4

Umarex Morph 3X rifle
The Umarex MORPH 3X is many airguns in one!

Today, you’ll get a twofer — thanks to blog reader Les, who asked about adjusting dot sights and lasers. I said I would test the Umarex MORPH 3X with a dot sight, so I thought I’d combine that test with instructions on how to adjust the sight to hit the point of impact.

I hadn’t considered testing a laser on the Morph, but I can certainly describe how to do it. I’ll get to that at the end of the report.

The dot sight
What is a dot sight? Well, once you understand what it is, you’ll understand that adjusting one is the same as adjusting a scope. Because that is what a dot sight is — a scope without the magnification (usually) or the crosshairs!

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