The Modular Headspace Comparator Inserts are designed for precision cartridge headspace and bullet measurements and require the separately sold Modular Headspace Comparator Body.
Made from durable and corrosion-resistant 17-4 Stainless Steel, the new design accommodates cartridges up to 338 Lapua Magnum.
Produced by SHORT ACTION CUSTOMS, LLC., these inserts are part of the broader category of Case Gauges & Headspace Tools.