Nice piece but silly mounting system. - Brownells Retro 4X 4x21mm Rifle Scope w/ Carry Handle, 35mm Tube, First Focal Plane

Looking for any scope for an AR15 carry handle really limits your choices. You can buy those bases that allow use of the iron sights, but they put your scope up even higher with the scope rings. I have the Colt M4 carbine with an Armalite carry handle, so going retro really looks good on this. Besides, this is one of the smallest scopes made, anything standard size looks way too big on a carbine. 4X is just enough magnification and that is what the military uses, so this scope makes good sense. Not too many guys are going to drop a grand to put a Trijicon on which is the current military choice. This scope is simple in features and even has the elevation click knob that adjusts for 100 out to 500 yards. Pretty cool instead of squinting at scope reticle crosshair hash marks. The optic quality is good and clear with decent eye relief. The standard crosshairs are rather thick at the point of aim, I wish they were even thinner for when I am going for maximum accuracy. But once you zero this in, it holds true and you can bang out bullseyes all day. Now why did I give only four stars? That silly mounting system is the biggest joke I ever saw...what idiot dreamed that up? A round screw-om thumbnut would anchor it more solidly and look way better. Finding one of those in black with the correct thread size is tough, so I went to Ace Hardware and got a simple metal nut. This clamps the scope to the carry handle with no movement and some Locktite ensures it won't come loose. That is all you need, plus after all, you have your carry handle AR15 for the great retro looks. These current flat top models just don't look right.