Good compact prismatic sight - Falke CS 4x20mm Ballistic Reticle Prismatic Red Dot Sight

Overall I’m very happy with the scope on my 5.56 16” M4. Very clear glass, and good magnification that is a true 4x. It’s compact and lightweight, and has a great quick detach mount with throw lever that is easy to adjust and mount.
It has a good illuminated reticle, for close in shots it works well as a quick point and shoot, almost as quick as an unmagnified red dot, and the 4x magnification is nice for longer shots.

Some items to be mindful of to ensure it’s what will work for you:
It does have a short eye relief, so you have to use a nose to charging handle cheek weld. With it being a compact scope it is on the smaller size, so a lot more narrow to sight through than an average size scope or red dot. The hold over etchings are also a little on the small size, so it’s difficult to read the ranging markings.