8) The molybdenum (type metal) post mounts were done for a number of handguns: Colt and S&W required tapping of the top strap, whereas the Hawkeye already had two D&T holes inthe top rear of the barrel(Only!)(Never onthe top strap from the factory!!) I consider these post mount kits to be a second generation mount system for scopes that did not come with a clamp attachment block/process, which attached to the grooves on the bottom of the scope, as in the Bushnell Phantom. The Phantom scope, First generation optic to the 256 Hawkeye, came with a Hawkeye (so marked) one piece metal base which had holes predrilled to match the factory R&T holes in the rear top of the Hawkeye's barrel. From the side, one views this mounting system as a three layered format: First, the referenced metal base(Marked HAWKEYE); Second the scope mount base?block; Third, the scope itself, in 1.x or 2.x power.........I recall vaguely(age, you must understand) that we had a RF discussion on Hawkeye mounts, partially lead by our Friend, WMG. :wink: .......Anyway, there you have it, but only for now, of course.........MIKE