Silent Dry Vaportack Bullets 12 Gauge Protect your shotgun the smart way. Silent Dry Vaportack Bullets use advanced V.C.I. (Volatile Corrosion Inhibitor) technology to combat rust and corrosion inside the barrel of your 12 gauge shotgun. Designed to replicate the exact size of a real cartridge, these 1:1 scale inserts release protective compounds into the airspace of your barrel, forming an oxide layer on metal surfaces to prevent long-term damage from moisture. Designed for 12 gauge shotguns 1:1 cartridge size for easy chamber fit V.C.I. technology actively protects against rust and corrosion Silent, dry, and easy to use Ideal for storage, transport, or seasonal protection