If you’re looking for quality and functionality i would use other parts - CAA Advanced Upgrade Kit

I bought the advance kit cause it does have some parts I liked but honestly the parts where super cheap and the 500 lumen light wasn’t even in the box. The laser is adjustable Only if you take it all apart and then adjust it so almost pointless versus having a light. The sights are plastic and the fit and finish on them is so-so, I’ve seen airsoft sights that are better. The best parts in the kit are the sling, which is your basic quick detach bungy single point sling and the thumb rests. I’ll probably order the thumb rests separately for a couple of my other guns. But overall not worth the $190+ in my opinion.