Triple-k Deluxe Snap Caps Dummy Rounds .30 M1 Carbine 5 Count The spring-loaded primers in these snap caps act much like a live primer and cushion the blow so firing pin and bushing damage won’t occur. Bright color and different feel to prevent mixing with live rounds or function-testing dummies. (Don’t use snap caps as dummies - they don’t duplicate loaded round weight/balance). Specifications: - Caliber: 30 Carbine - Base Material: Brass - Body Material: Plastic - Item Length (Inches): 8.000 - Item Height (Inches): 1.500 - Item Width (Inches): 5.000 - Item Weight (lbs): 0.100 - Quantity: 5 - Made in USA