How is the Colt Competition Integral-Base Scope Mount?

[Carcassonne]

Anyone have/had the Colt Competition Integral-Base Scope Mount? They are supposedly made in USA.

How is it? What is the height of the rings above the rail (1" model)?

http://www.ebay.com/itm/Colt-Competition-Integral-Base-Scope-Mounts-1-Colt-Logo-1401-/400952065463?hash=item5d5a9afdb7

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