A-ZOOM BLUE Action Proving Dummy Round .40 S&W, Snap Cap, Package of 10

A-Zoom Action Proving Dummy Snap Cap are precision machined from aluminum to exacting tolerances. They feature a hard anodized finish that provides ultra-smooth functioning and long cycling life. These are perfect for dry fire practice, training and function testing, and teaching safety or storing your firearms with the spring relaxed for longer spring life.

Technical Information: A-Zoom Action Proving Dummy Snap Cap