Ditto what the last two guys said...... that question has been asked answered a gazzilon times. Bottom line (for me anyway) is the fact that the Weaver's are there through thick-n-thin. The product and service are second to none.
Do your search here for feedback, as well as on Club Cobra. If cost is an issue - Unique is by no means the least expense.... nor is it the most expense. But they have been doing this for sometime now, which speaks well for the Company, the product..... and their customers.
Good luck!
Phil
427 Roadster, #4279436
FE Specialties FE
3:31 and Toploader (wide ratio)
Roseville (N.Cal)