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EGW
The EGW 5.56x45mm NATO 7-hole cartridge checker is a precision go/no-go gauge built for reloaders and shooters who want to catch out-of-spec ammunition before it reaches the chamber. Whether you're running factory loads or your own handloads, this tool verifies that rounds meet proper dimensions for reliable feeding, ignition, and function. It's an affordable insurance policy against jams, misfires, and the frustration of ammunition that doesn't perform as it should.
Machined from aircraft-grade 6061-T6 aluminum and finished in anodized matte black, the EGW checker combines durability with precision. The seven-hole design lets you test multiple cartridges at once, speeding up batch verification. The tool uses actual Clymer reamers to ensure your ammunition truly matches your rifle's chamber, not just generic specifications. Two critical dimensions are checked: minimum case diameter and maximum overall length—the most common points where loaded ammo deviates from spec.
Use this before heading to the range with new reloads, or as a quality-control step in your reloading workflow. Shooters running AR-15s and other 5.56 NATO rifles will find it essential for diagnosing feeding problems or confirming that a new batch of handloads is safe to fire. It's compact, low-maintenance, and becomes a standard bench tool for anyone serious about consistent ammunition.
| Caliber | 5.56x45mm NATO |
| Holes | 7 |
| Material | 6061 T6 aircraft-grade aluminum |
| Finish | Anodized matte black |
| Measurements | Minimum case diameter and maximum overall length |
Yes. The EGW checker works with both factory-loaded and reloaded ammo, making it useful for verifying any 5.56x45mm NATO ammunition before it goes into your rifle.
It checks two critical specs: minimum case diameter and maximum overall length. These are the most common points where ammunition goes out of spec and causes feeding or chamber issues.
The seven-hole configuration lets you test multiple cartridges at once, speeding up batch verification instead of checking rounds one at a time.
Clymer reamers are actual chamber-cutting tools, so the checker's dimensions are based on real chamber specs rather than generic tolerances. This ensures your ammo truly matches your rifle's chamber.
EGW
The EGW 5.56x45mm NATO 7-hole cartridge checker is a precision go/no-go gauge built for reloaders and shooters who want to catch out-of-spec ammunition before it reaches the chamber. Whether you're running factory loads or your own handloads, this tool verifies that rounds meet proper dimensions for reliable feeding, ignition, and function. It's an affordable insurance policy against jams, misfires, and the frustration of ammunition that doesn't perform as it should.
Machined from aircraft-grade 6061-T6 aluminum and finished in anodized matte black, the EGW checker combines durability with precision. The seven-hole design lets you test multiple cartridges at once, speeding up batch verification. The tool uses actual Clymer reamers to ensure your ammunition truly matches your rifle's chamber, not just generic specifications. Two critical dimensions are checked: minimum case diameter and maximum overall length—the most common points where loaded ammo deviates from spec.
Use this before heading to the range with new reloads, or as a quality-control step in your reloading workflow. Shooters running AR-15s and other 5.56 NATO rifles will find it essential for diagnosing feeding problems or confirming that a new batch of handloads is safe to fire. It's compact, low-maintenance, and becomes a standard bench tool for anyone serious about consistent ammunition.
| Caliber | 5.56x45mm NATO |
| Holes | 7 |
| Material | 6061 T6 aircraft-grade aluminum |
| Finish | Anodized matte black |
| Measurements | Minimum case diameter and maximum overall length |
Yes. The EGW checker works with both factory-loaded and reloaded ammo, making it useful for verifying any 5.56x45mm NATO ammunition before it goes into your rifle.
It checks two critical specs: minimum case diameter and maximum overall length. These are the most common points where ammunition goes out of spec and causes feeding or chamber issues.
The seven-hole configuration lets you test multiple cartridges at once, speeding up batch verification instead of checking rounds one at a time.
Clymer reamers are actual chamber-cutting tools, so the checker's dimensions are based on real chamber specs rather than generic tolerances. This ensures your ammo truly matches your rifle's chamber.
