The insert is part of the Modular Headspace Comparator system and requires the separate purchase of the Modular Headspace Comparator Body.
It is designed for precision measurement of cartridges up to 338 Lapua Magnum, offering improved durability and corrosion resistance with its 17-4 Stainless Steel construction.
This product represents an advancement from previous models, providing the highest quality for cartridge headspace and bullet measurements.