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The Zenix Uni mounts directly to the outer barrel of your WE Galaxy and transforms it into a fully functional, HPA-powered primary. Designed for maximum compatibility, it feeds from standard M4 AEG magazines and shifts the center of mass forward for faster, more stable handling.
!IMPORTANT: We recommend upgrading the Loading-Nozzle spring of your replica to ensure consistent and reliable feeding of BBs, as the stock spring is rather weak.
Key Features:
M4 Magazine Magwell HPA
Accepts standard M4 AEG magazines, giving you increased capacity, accuracy and faster reloads without the need for GBB mags.Ambidextrous Mag Latch
Easily accessible from either side.Tool-Free BB Line Removal
The BB line disconnects in seconds without tools, making transport and maintenance quick and painless.Asymmetric US Hose Plug
The HPA inlet is offset for added comfort and clearance.Reliable BB Retainer
Uses the proven MCO single-pin system for smooth, reliable feeding with no dry shots or feeding issues.Perfect Fit Magshims
Built-in magwell shims ensure your M4 mag seats tightly every time — no wobble, no rattle.Balanced Weight Distribution
Shifts weight forward for better handling, faster target transitions, and improved stability under pressure.Modular Design
Based on the universal MCO platform — easily adaptable to other models with a few part swaps.
Usage Requirements:
Compatible with M4 AEG-style magazines
Requires paintball HPA tank with low-pressure regulator (0–140 psi)
Requires US Foster quick disconnect hose (e.g., MCO XF-Lines)
Safety & Compatibility Notes:
Do not exceed 140 psi
Not all M4 AEG mags are guaranteed to fit from the getgo— test and adjust as needed. We strongly recommend using PTS EPM1-S Magazines.
Perfect for:
CQB and GBB players who want to convert their favourite pistol into a primary.
What’s in the box:
Zenix Uni Adapter
Small bag of spare parts
(Optional) Ultra Light Magazine
