Linemount 5.56x45 NATO Min & Max Gauge - ZPV-5NN

Ensure the utmost precision and safety in your firearm builds with the Linemount 5.56×45 NATO Min & Max Gauge set. Designed for reloaders, gunsmiths, and AR-15 enthusiasts, this essential toolset verifies headspace dimensions to prevent dangerous malfunctions and optimize performance. Crafted from high-quality hardened steel, these gauges help you achieve reliable chambering for 5.56 NATO ammunition, delivering peace of mind with every shot.

Key Features

• Precision-Machined Gauges: The Min Gauge (GO) measures 1.4646 inches, confirming minimum headspace for safe closure, while the Max Gauge (FIELD) at 1.4736 inches identifies excessive headspace to avoid case stretching or separation.
• Hardened Steel Construction: Built to withstand rigorous use, ensuring long-lasting accuracy and durability in your workshop.
• Easy-to-Use Design: Simple drop-in functionality allows quick verification without specialized equipment, saving time on assembly and maintenance.
• Compatible with 5.56×45 NATO: Specifically calibrated for military-spec chambers, ideal for AR-15, M4, and similar platforms.

Specifications

• Caliber: 5.56×45 NATO
• Gauge Types: Min (GO) and Max (FIELD)
• Material: Hardened Steel
• Weight: 0.8 lbs
• Length: 1.76 inches
• Width: 0.37 inches

Why Choose This Product

Headspace issues can lead to unreliable feeding, poor accuracy, and even catastrophic failures—don’t risk it. The Linemount 5.56×45 NATO Min & Max Gauge set addresses these pain points by providing exact measurements that align with SAAMI and NATO standards. Whether you’re assembling a custom build or inspecting a used barrel, these gauges ensure your firearm operates at peak efficiency, enhancing safety and shot-to-shot consistency. Invest in quality tools that protect your investment and promote responsible firearm handling.

Ready to elevate your gunsmithing precision? Add the Linemount 5.56×45 NATO Min & Max Gauge to your toolkit today and build with confidence.

Frequently Asked Questions

What is the difference between the Min and Max gauges?

The Min Gauge checks the minimum headspace to ensure the bolt closes properly, while the Max Gauge detects if headspace exceeds safe limits, preventing potential hazards like case head separation.

Are these gauges suitable for .223 Remington chambers?

These are optimized for 5.56×45 NATO chambers, which have slightly different specs from .223 Remington. For .223, use dedicated gauges to maintain accuracy and safety.

How do I use these headspace gauges?

Drop the gauge into the chamber with the bolt removed. The action should close on the Min Gauge but not on the Max Gauge. If it closes on the Max, recheck or rechamber the barrel.