Umarex HDR50/HDP50 Z-RAM Firing Bolt: Does the Bare Bolt Add Power?
Understand the standalone bolt’s role, what is not included, and why the HDR50/HDP50 and HDR68/TR68 offers should remain separate purchase choices.
Read guide
Z-RAM GUIDE
Z-RAM technical knowledge
Z-RAM-guider
Practical product, compatibility and installation guides for Z-RAM systems.
Umarex HDR50/TR50 Steel Barrel: Do You Need Shaped Projectiles?
Round balls remain a projectile shape to consider after a barrel change. That does not make every .50 ball a confirmed match for every replacement barrel.
Read guide
Umarex T4E HDR50/TR50 Uppgraderingsguide: Komplett CO₂- och HPA-videoserie
Follow de tre Umarex T4E HDR50/TR50-videorna som en sammanhängande serie som slutar antingen med en 12 g CO₂-setup eller en separat HPA-konvertering, med exakta paketgränser.
Read guide