BYRNA 8 GRAM CO2 CARTRIDGES CO2310 | PACK OF 10 Manufacturer Model Number: CO2310 Manufacturer: Byrna Technologies Model: HD CO2 Cartridges Type: Accessory-CO2 Cartridges Item Type: Accessory Shipping Weight: 0.8 Feature: Includes Oiler Feature: Ten Pack Optic Adjustable Objective: false Optic Reticle Illuminated: false