The Modular Headspace Comparator Inserts are designed for precision cartridge headspace and bullet measurements, and require the separately sold Modular Headspace Comparator Body.
These inserts are part of the new Modular Headspace Comparator system which can accommodate cartridges up to 338 Lapua Magnum, made from durable and corrosion-resistant 17-4 Stainless Steel.
Manufactured by SHORT ACTION CUSTOMS, LLC., these inserts are for the 7mm cartridge and are part of the Case Gauges & Headspace Tools category.