I love my 1-4x vision sling short dot. I've used it a lot on a few different guns. The glass is decently clear, I'm sure if I splashed out on something better I'd see a big difference but it's clear enough to still ID targets into the evening. The red dot is super dim so I never use it. It's got a bit of a weird border round the edge of the sight picture when you look through it but it disappears when you're in game. I think it was part of a poor quality batch as it was £40, around half off. My experience of red dots and magnifiers is that you need to get the more expensive ones as the multiple layers of glass cause a much darker sight picture.