The Adaptive Target Rifle Headspace Check Gauge is designed for gunbuilders and barrelers to measure a barrels headspace with the barrel extension without the need for the customers bolt or complete rifle. This makes the chambering process very simple as the check gauge exactly mimics the bolt lug to bolt face dimension on all of the Adaptive Target Rifles allowing it to be used instead of the customers actual bolt during the chambering process.
4340 Alloy steel hardened to 40 Rockwell
QPQ nitrided finish
Designed to accomodate all cartridges up to .590 rim diameter