Z-RAM Guides

Practical product, compatibility and installation guides for Z-RAM systems.

Z-RAM HDR50 and TR50 HPA upgrade package

Umarex T4E HDR50/TR50 Upgrade Guide: Complete CO₂ and HPA Video Series

Follow the three Umarex T4E HDR50/TR50 videos as one connected series that ends in either a 12 g CO₂ setup or a separate HPA conversion, with exact package boundaries.

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