A clone's handle is usually not made from steel
But some form of casted alloy.
The color and surface texture of which is quite
Unlike an original buckmaster which has a
steel handle with a bead blasted finish.
The original patent describes the grappling hooks
On the buckmaster as "threaded grapples"
Which screw into mating threaded openings in quilion of the knife".
The patent also describes "a ring at the pommel end of the handle
To which a line maybe attached..."
http://www.buck-184.com/library/us04622707.pdf
Fact is, the end product turned out quite different,
And lacked the grappling feature.
The use of those pins on the actual production buckmaster are described here
http://www.buck-184.com/library/buck_184_fcts.pdf
"Designed to serve as emergency anchors, to secure line
And to provide protection for the hand..."
Thus, whilst the initial idea calls for a grappling feature,
The patented grappling feature on the production buckmaster
simply did not materialize.
They are marketed as "anchor pins"...