Forster Products .308 (7.62 Nato) 1.631'' Match Gauge Headspace Gauge Steel

The Forster Products .308 (7.62 NATO) 1.631" match gauge headspace gauge is a precision gunsmithing tool built for shooters and armorers who need to verify exact chamber dimensions on .308 Winchester rifles. Whether you're maintaining a match-grade barrel, monitoring lug wear, or setting up a custom build, this steel gauge gives you the measurement data to keep your rifle performing at its best. Forster's match gauges are the standard in precision rifle work—trusted by competitive shooters and gunsmiths who can't afford guesswork when it comes to headspace.

This specific gauge is machined to 1.631" and is manufactured from hardened, ground high-speed steel, so it'll hold its dimensions and accuracy through years of routine checks. The .308/7.62 NATO chamber is one of the most common in precision rifle shooting, making this a workhorse tool for your gunsmithing bench. Use it to track how your chamber is wearing over time, confirm that a new barrel is cut to spec, or verify that a reamed chamber is right where you want it.

Forster's approach to match gauges means you get consistency and reliability every time you pull it out of your toolbox. The hardened steel construction stands up to regular use without degrading, and the precision grinding ensures the gauge itself won't introduce error into your measurements. If you're serious about rifle accuracy and longevity, accurate headspace verification belongs in your toolkit.

Key Features

• Hardened and ground high-speed steel construction for lasting accuracy and durability
• Precisely machined to 1.631" for .308 Winchester / 7.62 NATO chambers
• Essential tool for monitoring chamber wear and verifying headspace on match-grade barrels
• Trusted by competitive shooters, armorers, and precision rifle gunsmiths

Specifications

Frequently Asked Questions

What is this gauge used for?

This headspace gauge is used to measure and verify chamber dimensions on .308 Winchester / 7.62 NATO rifles. Gunsmiths and shooters use it to confirm that a barrel has been reamed to spec, to track how a chamber wears over time, and to diagnose headspace issues during maintenance or troubleshooting.

Will this gauge work on my .308 rifle?

This gauge is designed for rifles chambered in .308 Winchester or 7.62 NATO. If your rifle is chambered in one of those cartridges and you need to check headspace at 1.631", this is the correct tool.

What's the difference between this gauge and others in Forster's line?

Forster makes match gauges in .001" increments across the full range of Go to Field measurements for the .308 / 7.62 NATO chambering. This specific gauge is the 1.631" size; the incremental steps allow you to narrow down exactly where your chamber falls and monitor small changes in wear over time.

Is this a go or no-go gauge?

This is a single-dimension match gauge set to 1.631". It's designed for precision measurement and monitoring rather than simple go/no-go checking. For detailed chamber verification, shooters and gunsmiths typically use multiple gauges across the range to pinpoint exact dimensions.