Precision machined aluminum gauge is the quick, accurate, easy way to check reloaded ammunition—or suspect factory ammo—to verify that it is dimensionally correct for proper function in your rifle. A majority of semi-auto jams are caused by oversized cases; if your ammo doesn’t fit the case gauge, it won’t fit your chamber. Anodized red or blue for easy caliber identification. Red .223/5.56 Wylde gauge fits .223 SAAMI and 5.56 NATO. Blue .308/7.62 gauge fits .308 SAAMI and 7.62mm NATO.
SPECS:
Aluminum, anodized red (.223/5.56 Wylde) or blue (.308/7.62).