Good for target practice. bad for competition. - SIG SAUER ROMEO Zero Elite 1x24mm Reflex Red Dot Sight

The Sig Romeo Zero compares poorly to the Holosun "K", but that optic costs more than twice as much.

good: Cheap, accurate optic. The dot is visible and shoots straight. I have no reason to believe that it will let you down indoors, after sighting-in and adjusting brightness. Very adequate for practice.

worst part: Only one button for brightness settings, and it's in a bad spot. It's hard to press with your finger, and if you do, you will smudge up the lens. You realistically have to use a tool to press it. And with its single button, it will cycle up-and-down through brightness settings, but you won't know where you are. That is bad for a competition setting. If it had two buttons, you could go up/down and find your setting fast and conveniently - and you would know when you're at min/max brightness. Not the case with this optic.

2nd problem: Battery is sandwiched between the mount and the optic. You have to put tape down on the mount, so the battery won't short out. That's bad for water resistance. An outdoor competition can get wet. For indoor practice, it's not a problem.

3rd problem: windage/elevation controls use a micro hex key and there are no click values. you have to adjust by "feel". Once it's zeroed-in, it's irrelevant, but other optics have click values that correspond to MOA adjustment.

4th problem: optic is designed to mount with wide M4 screws. It includes special M3 screws with built-in spacers, so it will fit anything drilled for M3 or M4. But if the gun or mount is drilled for imperial thread, you are out of luck.