Lyman Ammo Checker 20 Gauge - Aluminum

The Lyman Ammo Checker 20 Gauge in aluminum is a precision reloading tool designed for shooters who demand consistency and reliability in their ammunition quality control. Whether you're a competitive shotgun competitor, a law enforcement armorer, or a serious handloader, this go-gauge checks fired and unfired 20-gauge shells to ensure they meet SAAMI specifications before they enter your magazine or ammunition storage. Field-proven across both civilian and military reloading operations, the Ammo Checker eliminates guesswork and prevents out-of-spec rounds from compromising firearm function or shooter safety.

Constructed from durable aluminum, the Lyman Ammo Checker features a compact design that weighs only 0.35 pounds, making it portable enough to carry to the range or keep in your reloading bench without adding bulk. The tool works by accepting a loaded or unloaded 20-gauge shell; if the round passes through without binding, it meets specification tolerances for length and overall dimensions. This simple go/no-go principle requires no batteries, electronics, or calibration—it's a mechanical verification standard that has remained unchanged in professional ammunition inspection for decades because it works reliably in any environment.

Reloaders, ammunition manufacturers, and law enforcement ammunition custodians rely on the Lyman Ammo Checker to maintain compliance with SAAMI specifications and prevent firearm malfunctions caused by out-of-tolerance shells. The 20-gauge configuration makes this essential for shotgun reloaders working with buckshot, birdshot, or specialty loads for tactical, hunting, or competitive applications. Keep one at your reloading station, in your range bag, or in your armory—this tool pays for itself the first time it catches a marginal round that could have caused a feeding failure or safety issue downrange.