The 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.