Forster Headspace Gauge 300 AAC Blackout Precision Machined

Description

Product Overview

The Forster Headspace Gauge is a precision tool engineered for checking headspace in 300 AAC Blackout rimless cartridges, ensuring optimal rifle chamber dimensions. Manufactured from top-quality hardened steel, it is precision ground to ANSI and SAAMI tolerances with a headspace tolerance of ±.00015 for exceptional accuracy. Each gauge undergoes thorough inspection with NIST-traceable equipment, guaranteeing reliability. Key components include GO and NO-GO gauges: the GO gauge corresponds to minimum chamber dimensions, allowing acceptance of SAAMI-maximum ammunition, while the NO-GO gauge indicates maximum recommended headspace for gunsmiths chambering new bolt-action rifles. Package dimensions are 5.87 x 3.9 x 1.18 inches, weighing 1.76 ounces, and it was first available on April 4, 2017.

Usage

This headspace gauge is ideal for gunsmiths, firearm manufacturers, and enthusiasts working with 300 AAC Blackout rifles to verify chamber headspace during assembly, maintenance, or troubleshooting. It is used in workshops, armories, and home gun-smithing setups to ensure chambers meet SAAMI specifications, preventing issues like excessive headspace that can lead to safety hazards. The tool is essential for chambering new bolt-action rifles, checking reamed chambers, and validating firearm safety before use.

Why Choose Us

Forster Products delivers unmatched quality with hardened steel construction and precision grinding to exacting tolerances, ensuring long-lasting durability and accuracy. Each gauge is inspected with NIST-traceable methods, providing confidence in measurements for critical firearm applications. The brand’s commitment to ANSI and SAAMI standards sets it apart, offering reliable performance that meets professional gunsmithing needs without compromise.

Key Features

• Precision machined from hardened steel for durability and resistance to wear
• Ground to ANSI and SAAMI tolerances with ±.00015 headspace accuracy
• Includes GO and NO-GO gauges for comprehensive chamber dimension checks
• Thoroughly inspected with NIST-traceable equipment for reliable results
• Designed specifically for 300 AAC Blackout rimless cartridge headspace testing

FAQ

What is headspace in a rifle chamber?

Headspace is the distance between the bolt face and a datum line on the cartridge case, critical for safe firearm operation as it ensures proper cartridge fit and prevents malfunctions.

How do I use the GO and NO-GO gauges?

The GO gauge checks if a chamber accepts SAAMI-maximum ammunition by closing easily, while the NO-GO gauge should not close if headspace is within safe limits, indicating potential issues.

Is this gauge suitable for other calibers?

No, this gauge is specifically designed for 300 AAC Blackout cartridges and may not be accurate for other calibers without proper adaptation.

What materials are used in construction?

It is made from top-quality hardened steel, precision ground to maintain tolerances and withstand repeated use in professional settings.

How do I maintain the gauge?

Store in a dry, clean environment and handle with care to avoid damage; regular inspection for wear ensures ongoing accuracy.