The UV3 and UV3XL will attach to almost every target sight on the market including Axcel, Shibuya, CBE, ArcSystem etc... If you are unsure as to if it will fit the sight you have please contact your sight manufacturer and ask them if the UV3/UV3XL Scope will fit (it is very difficult to keep up with all the sights on the market as they are constantly changing).
If your sight has an attachment for a 10-32 bolt it will most likely fit. However we still recommend contacting your sight manufacturer as it is very hard for us to be certain if it will fit, but they will know for sure.
If you have an Axcel sight you may need this adapter piece: Heres the link: http://www.lancasterarchery.com/axcel-scope-barrel.html
If you have a Spot Hogg sight you may need this adapter piece: Here is the link: https://www.lancasterarchery.com/shrewd-scope-rod-3-8-diameter.html