For firearm assembly and disassembly, the Universal Bench Block is your best friend. It features a variety of notches, grooves, and holes on both sides and is ideally suited for M1911-style pistols. Need to install a pin, detent, or spring? The Universal Bench Block is the answer. 1-5/16" high, 4" in diameter. Nonmarring urethane for long use.

This bench block has various holes and grooves designed for use with Colt 1911A1 pistols and clones
It can be used with almost any gun
The holes and grooves function as a "third hand" while drifting pins from frames, etc.
Will not mar finish of gun parts.
Material: Polymer
Dimensions: 4" diameter, 1.25" thick