The CPA palm rest is modeled on the original Stevens-Pope model often seen on Stevens rifles. Stevens palm rests came in many different styles, and this one is copied from the palm rest on a Stevens-Pope Model 49. The knob is held on by a flange attached to the collet tube assembly, allowing positive assembly, easy disassembly, and the boring of a hole to gain another one inch in height travel. The palm rest is completely machined and assembled, ready to install on your rifle.
Knob are typically lightly figured American walnut but if you want something different please ask.