A-Zoom 12313 20 Gauge Dummy Rounds are precision CNC machined from solid aluminum to ensure exact cartridge dimensions for reliable performance. This 5-pack of blue snap caps is designed for safety training and function testing, allowing you to safely decock your firearm without risking damage to the firing pin.Key FeaturesPrecision CNC Machined: Ensures exact cartridge dimensions for reliable function.Solid Aluminum Construction: Provides durability and longevity for repeated use.Hard Anodized Finish: Enhances smooth functioning and prevents wear over time.5-Pack Quantity: Conveniently packaged for multiple training sessions.