The Manson Precision 223 Remington GO Gauge ensures firearms have the proper chamber headspace dimensions for safety, adhering to SAMMI-recommended minimum chamber depth.
Mixing brands of headspace gauges can lead to inaccurate readings due to tolerance stacking, so it's advised to use gauges from the same manufacturer for consistency.
The gauge is made from M7 high-speed steel, is in-the-white, and has been hardened for durability and long service life.