Umarex Hammerli 2251006 Co2 Adapter 850, 2 x 12g, Black Allows the use of 12g CO2 capsules instead of 88g Great for shorter shooting sessions Conceals within forearm For D cell flashlight Easily installed on compatible guns Allows the use of 12g CO2 capsules instead of 88g Great for shorter shooting sessions Conceals within forearm