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Sirius BullPup
Sirius Bullpup Platform
Compact HPA platform built for aggressive CQB performance.
Sirius is a next generation bullpup platform designed to deliver maximum performance in a reduced form factor.
Built around a compact architecture, it provides rifle level capability with superior maneuverability in tight environments.
Sirius is a fully 3D printable HPA platform engineered for CQB and
high mobility gameplay.
By adopting a bullpup configuration, the platform relocates the action
behind the trigger, reducing overall length while maintaining barrel efficiency
and performance.
Designed for digital manufacturing, Sirius delivers precise engine alignment,
simplified assembly and full modular customization.
Compatible with Polarstar F2™ and Jack™ engines.
HPA Native Architecture · Bullpup Configuration · Designed for CQB Performance
Designed for CQB
Ultra compact platform for indoor and close range environments.
Enhanced maneuverability
Shorter profile allows faster transitions and tighter movement.
Full performance
Maintains rifle level efficiency despite reduced size.
Released under CC BY-NC-ND 4.0 license.
Commercial use strictly prohibited.
COMMUNITY BUILDS 📸
Printed and assembled your own Sirius platform?
Post a photo of your build on Instagram and tag
@clutchfireworks and @polarstarairsoft
The best builds may be featured on Clutchfire Instagram page.
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