Please note: Our latest batch of .177 caliber have came through dyed black - they are still the upgraded polyurethane spec!

When customers have lack of power, or loss of consistency this is one of the first parts that we check. The breech o ring is what creates the seal between the pellet probe and the barrel. The pellet is actually pushed past this. 

Over time these seals can become worn or damaged (or in some cases missing).

We have developed an upgraded material seal that is more resistant to wear and normal use. This means your breech seals last much longer giving you more consistent power and accuracy.

Part No 120 on the Air Arms diagram