The GILCHRIST PRECISION CHOKE REAMER is designed for precise cutter to bore alignment and can fine-tune choke size or remove chokes for screw-in installations.
It requires the Gilchrist Handle and two appropriate Clymer Choke Tooling Bushings for correct operation.
The reamer is available in different expansion ranges for 20 and 12 gauge shotguns, but pilots for 10 and 16 gauge are not available.