Midsouth now offers the A-Zoom 12 Gauge Shotshell Snap Caps Blue 5 Pack. The A-Zoom 12 Ga Snap Caps are a set of snap caps for practicing trigger pull on your favorite shotgun. These Snap Caps can be used in pump, semi-auto and double barrel shotguns. The caps are used to improve your trigger pull skills and with the A-Zoom Snap Caps in your chamber, you do not have to be concerned with damaging your firearms firing pin or striker.