The Manson Precision 12 Gauge Reamer is a high-speed steel tool for installing choke tubes, offering precision with enhanced end relief for a faster cut.
It is designed for use with a lathe for superior results, but can be operated by hand, and utilizes interchangeable pilot bushings for accurate bore alignment.
Compatible with a variety of shotgun brands, the reamer threads barrels to fit original and aftermarket tubes from Win-Choke, Browning Invector®, and others.