Melissa, Just get a red dot optic that will mount on the Charger pic rail. Any one will work. Pick one here-----------------budsgunshop.com/search.php/type/Red+Dot++Holo

this is what II use on mine budsgunshop.com/product_info.php/products_id/72308/truglo+tg8370b+red+dot+1x+24x34mm+screen+obj+unlimited+eye+r

Hi,
The rail on top of Ruger 22LR Charger allows you to use any kind of optics in the market. I not sure how you run your Charger but mine got a brace on it. I mount a 1-4X Vortex Optics Crossfire II scope on it. If you want to use the Charger as a pistol (no brace) then I would get long eye relief scope or red dot sight for it instead. I personally don't know where you can install laser as there is the only rail on the top of the receiver. So far I only have seen people who mod their Charger to install a laser on it.

Melissa, I would get both a scope for longer range shooting and a red dot for home defense. Recommended options for both are here : -- https://killedbypolice.net/22-pistol-scopes/