Rene, just about the perfect scope is the AR 5.56/.223 calibrated Bushnell : budsgunshop.com/product_info.php/products_id/712016201/bus+ar+3-9x40+ill+dz+223+riflescope --------------- If you meant Red Dot then the Sig Romeo : budsgunshop.com/product_info.php/products_id/714021642/sig+romeo+msr+red+dot+1x20+2moa

I have this one on my S&W sport II budsgunshop.com/product_info.php/products_id/90965/ncstar%2bstp3942gv2%2bmarkiii%2b3-9x42mm%2bil%2bp4%2bsniper%2b368-12%2bft%401

I've had really good luck with one I bought on Amazon for $90 called visionking 1.25-5×26. great scope for the price. Little pricier but also had good luck with a Bushnell 1-4×24 ffp ar optic, Wich is for 223/556. Either are great Scopes. Also agree with Edwards option for the 1-4 monstrum scope, I haven't personally owned that exact one but have owned two monstrum Scopes and they're a good value. Hope this helps.

Rene, here is a nice entry level scope that won't break the bank. https://monstrumtactical.com/1-4x24-first-focal-plane-ffp-rifle-scope-with-illuminated-rangefinder-reticle/