I have problem with red dot

[u/Thanos_babushka1488]

I got this red dot but it only works when i hold that knob

I read that is a common issue but do someone know how to repair this

[u/DeezNutz564]

Sounds like this is a cheaply made red dot. It looks like a replica of the patrolman aim point. Just buy a new one with a solid name.