Acog ta31a 4x32 that fits in the ar-15 a2carry handle - Trijicon ACOG 4x32 Red Triangle Reticle Rifle Scope

If you have an AR that has a non-removable carry handle, and want a 4 power optic to use on the rifle, which will be as a close height over bore (HOB) as possible, then consider this ACOG. You can buy a MUCH cheaper alternative if you install a picatinny rail on top of the carry handle, and then mount an optic on top of the rail, which may significantly increase the HOB ratio, depending on the size of that optic. The higher the optic mounting, the more the bullet's trajectory deviates from a straight line at different distances. That’s why I bought my particular ACOG. CAVEAT: While the ACOG has a battle tested lineage that spans decades, and is an exemplary optic, it may cost as much or more than your AR-15. But if you can afford it, I highly recommend the purchase. This is my second one. Admittedly, the tritium reticle may begin to fade after 10 years or more, but for daylight shooting, that is not an issue. I highly recommend this optic that installs easily into the channel on top of the AR 15‘s A2 carry handle.