No such thing... There are very few scopes that have AR carry-handle mounts.
Your choices there are more or less limited to the following:
- Trijicon ACOG/Compact ACOG - expensive, but the best combat scopes available, by a long way.
- Colt-branded imported 3X scopes, long out of production, but available used. Decent, simple scopes.
- Cheapie Chinese Colt-scope knock-offs in the $40-60 range
Otherwise, you're looking at some kind of conventional "hunting"-type scope, which really needs to be mounted to a flattop to be usable. In this catagory, I advise the $260 3x9 Leupold VX-II as the entry level, as anything less is likely to rattle apart in short order, as they tend to be designed with hunters (who shoot 20 rounds per year) in mind.