The Archer Airguns Replacement Tube Cap for Umarex Fusion 1 and Xisico XS60C air rifles overcomes three problems that are often encountered with the factory tube cap supplied with these air rifles.

Please note that this works with the original, single-shot Umarex Fusion air rifle, NOT the new, multi-shot Fusion 2 version.

1. The tube cap fitted as standard to the Umarex Fusion 1 and Xisico XS60C can leak unacceptably. Leave the gun gassed-up and 24 hours later it’s probably empty..

2. The factory tube cap is also very complex. It’s confusing to operate and you may need to wait as long as an hour after releasing the CO2 from the gun before it’s possible to remove the tube cap..

3. In addition, the orange tube cap O ring is very soft. It swells like a balloon when the gun is gassed-up and is quickly damaged by blistering and cracking when the tube cap is removed - this leads to further leaking. These O rings can have a very short life before they require replacement..

The Archer Airguns Replacement Tube Cap overcomes the leak issues, allowing these guns to remain gassed up for an extended period.

It’s very simple to use. Just screw it on and unscrew after use. There’s no need to wait after the CO2 is used before removing this tube cap.

It uses a different, harder, O ring that swells much less, doesn’t blister and crack with use.

The only downside is that there’s no degassing capability with this tube cap (although some would say that’s another benefit!). Again the solution is very simple, just “shoot down” the remaining CO2 in the gun in the time-honored fashion, as has been done with generations of Crosman 160s, QB78s and similar CO2-powered air rifles.

Overall, the Arcer Airguns Replacement Tube Cap for Umarex Fusion 1 and XS60C Air Rifles makes a great improvement to the shooting pleasure you will derive from these otherwise interesting air rifles.