IMI Defense .300 AAC Blackout Dummy Bullets - Pack of 30 Blue. allowing the user to chamber and successfully extracts them. The high-quality polymer makes the dummy bullets look like the real deal. The hole in the bottom designed for a key chain modification to carry your favorite caliber with you the whole time. Specifications for IMI Defense Dummy Bullets: Manufacturer: IMI Defense Fabric/Material: Polymer Gun Type: Rifle Features of IMI Defense Dummy Bullets Made from High quality reinforced Polymer Identical dimensions as the actual bullets Can be extracted and chambered like the original Package Contents: IMI Defense Dummy Bullets IMI Defense IMI-DB300BLUE: .300 AAC Blackout Dummy Bullets - Pack of 30 Blue