Check the listing for details. Strike Industries 9mm Aluminum Dummy Rounds Snap-Caps/Training - 5-Pack - Blue. Color: Blue, Condition: New. Listed at 19.95 USD. Strike Industries 9mm Aluminum Dummy Rounds Snap-Caps/Training 5-Pack -Blue Features:Bright blue anodize and engraving for clear identificationDurable, flexible TPU “primer” pocket for safe dry fire practiceThe SI Aluminum Dummy round is a precision machined billet aluminum dummy round that serves as a vital part of your training kit. Anodized a bright blue to prevent confusion with live rounds, it serves as a realistic, but safe way to dry fire practice. The flexible polymer “primer” serves to protect your firing pin during high iteration dry fire practice sessions and replicates the feeding and extraction characteristics of live rounds, which is particularly useful for “ball and dummy” drills. *Dummy rounds only, magazine and firearm not included.