Tactical Deals Pack Of 5 Inert .223 REM Remington 5.56 NATO M16 AR-15 M4 Rifle Safety Trainer Cartridge Dummy Ammunition Ammo Shell Rounds Pack of 5 - These Trainer Cartridges are Inert Dummy Rounds Used for Training and Instructional Activities. Developed for Military and Law Enforcement Use - They Are Made from a Durable Synthetic Material and Colored Bright Orange and have a Different "Feel" for Instant Positive Identification to Make Sure These Won't Be Confused for Live Rounds. Popular with Many Departments and Agencies for Use In Immediate Action Training for Just That Reason. These Do Not Duplicate Weight and Balance of Loaded Rounds or Function-Testing Dummies. An Affordable Replacement for Traditional Metallic Dummy Cartridges. Trainers will Also Cushion the Firing Pin when Used As A Snap Cap.