Theta Optics Open reflex sight Back

Ł... Review confirmed by purchase

100%

20.01.2026

Review for model:

The best and cheapest collimator of all the offers. There are two colors (red and green) and four types of reticles. I only use the dot because in ASG you don't need precision, just speed.

It fits perfectly to the Zoraki pistol, which has only one slot on the 22mm rail. Several green and red crosshairs to choose from, with adjustable brightness.

For such a low price, it met my expectations. It doesn't weigh down the gun, you can barely feel it. Image sharpness is also good. The battery lasts long. Well packaged, it won't get damaged during transport.

The sharper the crosshair, the more it becomes double.

Nice collimator. I bought it on sale and I'm very happy about it. The battery lasts a long time. It's a bit difficult to zero, but it's doable. The body is mostly metal and the lens is glass. At the highest brightness setting, the reticle is clearly visible even during the day.

I recommend it, I have it for the GSG 22lr and the TyphoonF12 and it works great!!!

Useful thing, mounted on a P90 replica. The dot is distinct even in bright sunlight. I recommend getting a shield to place in front of the collimator, as the lens doesn't seem made to withstand BB impacts ;)

Very good collimator, from now on I'll only buy open ones, they work much better in ASG scenarios than closed ones.

Very pleasant collimator. For this price, it has everything you need. Various types of dots and their illumination colors make it a lot of fun.

The parallax is bearable, overall it does the job, but on a sunny day, forget about being able to aim accurately with it.

Fantastic, several types of reticles, 5-level brightness scale in 2 colors. No distortions on the edges. It's my first collimator, before choosing it I spent 2 days reading reviews and watching YouTube videos trying to choose the right product to be satisfied. RECOMMENDED.

Very well made, but it doesn't fit the Crosman Vigilante, because the top rail in the Vigilante is too short and only allows for mounting with one screw, so the collimator mount shifts at the front.

The collimator works well, attached to the GSG 15 side-firing carbine. From 50 meters you can easily hit the black area. For this price, it's worth buying.