X1 GEN II
Carbon Fiber bottle · Huben regulator
- Bottle material
- Carbon Fiber
- Bottle capacity
- 500 cc / 420 cc
- Maximum bottle fill pressure
- 300 bar
- Regulator
- Huben
- Regulator adjustment
- External adjustment knob
THE NEXT CHAPTER OF X1
Your feedback. Our next generation.
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DESIGNED & MANUFACTURED IN INDIA
ARBN SPORTS INDIA PVT. LTD.
Customer feedback shaped X1 Gen II. We redesigned the valve system and the chamber’s internal layout, reduced joints in the stock, and simplified the folding mechanism. Alongside a new textured polymer grip and an extended bottom rail, these changes address the everyday experience of owning an X1.
Some owners experienced recurring valve leakage, even after a valve replacement. For Gen II, we went beyond replacing the valve: we redesigned the complete valve system together with the chamber’s internal layout.
The new assembly uses a stainless-steel valve as part of a three-part system, paired with the new chamber.
SEE THE BATCH TEST
Feedback about stock movement and screws loosening led us to simplify the construction. The new stock reduces the number of joints, with its main structure machined from a single solid block and additional parts fitted to it.
The result is a steadier, stronger stock with simpler assembly and a refreshed appearance. It comes with a new cheekpiece and buttpad.
Reduced joints. More solid construction.
The previous folding mechanism could require a hard push on the release button. For Gen II, we simplified the hinge mechanism to make the button easier to press and the stock easier to fold, while retaining a strong mechanism.
Fewer complications in use. Simpler assembly.
Redesigned around everyday ease of use.

A change you can feel. The new textured polymer grip replaces the aluminium grip of the previous X1.
New material. Familiar X1 character.
A longer bottom rail gives you more mounting space, integrated into the X1 Gen II profile.
An extended platform beneath the cylinder.A batch of rifles fitted with the redesigned valve system and new chamber was tested for more than 5,000 shots per rifle. No leakage was observed from the valve or anywhere else on those rifles during the tests.
Based on ARBN’s reported batch testing. Results describe those tests and are not a lifetime leakage guarantee.
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Bookings are open. Contact ARBN to book your X1 GEN II.