Universal Rimfire Chamber Safety Flag — .22 Semi-Auto Pistols & Rifles

This chamber safety flag inserts through the ejection port area to physically block the action from returning to battery, with a flag tab that stays visible outside the firearm as a constant signal it can't be fired.

A keyring hole in the flag lets you clip on a keyring — handy for two reasons: it keeps the flag from getting set down and lost on the bench, and it makes it easy to tell your flag apart from someone else's at a shared bench or range by clipping on a small keychain or tag of your choice.

Fit: designed as a universal fit for rimfire semi-auto ejection ports. Confirmed test-fit by the maker on a Ruger .22 Mark-series pistol, a Ruger 10/22 rifle, and a Browning Buck Mark .22 pistol — three different actions from two different manufacturers with no fit issues. Not yet tested on every rimfire semi-auto model; if you're unsure about your exact gun, message us before ordering.

• Universal-fit ejection-port insert for rimfire semi-autos
• Confirmed on Ruger Mark-series pistols, Ruger 10/22, and Browning Buck Mark
• Keyring hole for staying with your gear and personalizing/identifying your flag
• High-visibility blaze orange
• Durable 3D-printed PETG, made to order

This is a visual safety aid, not a lock or certified safety device. Always personally verify a firearm is unloaded before storage, transport, or handling, and follow your range's specific safety rules.