While the concept of backup iron sights mounted at 45 degrees is not new, Diamondhead has displayed a prototype sight set at SHOT that seemed quite interesting. These spring-loaded sights fold down to the profile of standard irons, but pop out at 45 degrees.
This feature could be really useful for anyone who has an ACOG, especially one with a thumbscrew mount. For other shooters, the sights will probably have limited utility. But if you have to work around a scope and want access to full-sized iron sights, these appear to be just the ticket.
The sights have not been named, priced, or thoroughly tested yet, but the examples I saw looked quite functional. I had an in-depth conversation with Diamondhead's engineers and designers, and came away thoroughly impressed with their design and manufacturing philosophy.
