What makes a kac, noveske, or a lmt more worth more than a bushmaster, dpms, or even a colt 6920? It is about quality, limited availability/quanity, and the end user.
Nothing wrong with a 1997 mustang gt but I would rather have an Eleanor like gone in seconds. Same concept with knives. A...
Found this pecking around on the interweb...
http://www.botachtactical.com/ai13t1wmosp.html
T-1 micros about $500+ if you find them used. The same website has the T-1 without the mount for $645. The mounts are $100 used.
Just like to share.