Medium “O” Ring  [Item # 22060]
Replacement barrel seal
Accessories / Air Rifle Spare Parts / Medium “O” Ring
Replacement seal for break barrel air rifles for keeping pressure concentrated behind the pellet.
Air rifle Barrel O-Ring (Medium)

Will fit the following air rifles:

Hunter 1250, Hunter Extreme, Whisper and Viper Express, Shadow Sport Models - Receiver side O-ring.(Will also fit Big Cat 08-09 models-Receiver side o-ring and Varmint Hunter with receover-side o-ring)