Z-RAM ZDR50 Case for the Umarex HDR50/TR50: Hidden Z-Extension, Colors and Assembly
Z-RAM's complete historical ZDR50 case presentation: smoother black and silver finishes, grip colors, a concealed Z-Extension and the original assembly.
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Z-RAM ZDR50 V2 Valve for the Umarex HDR50/TR50: More Shots and Tests up to 38 Joules
Z-RAM's historical ZDR50 V2 valve presentation covers threaded 16, 20 and 25 g capsules, the matching case and full HDR50/TR50 tests up to 38 joules.
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Umarex HDR50/TR50 Tuning Comparison: Z-Extension, PowerKit and HPA up to 47 Joules
Follow Z-RAM's historical HDR50/TR50 comparison of the Z-Extension, PowerKit, Modify Pin and HPA, with original test conditions and results up to 47 joules.
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Z-Extension for the Umarex HDR50/TR50: The Original Housing-Adaptation Demonstration
The historical Z-RAM Z-Extension demonstration for the Umarex HDR50/TR50: housing adaptation, prototype details, stated benefits and the shop announcement.
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Z-RAM Z.68 Projectiles: First Strike FSC Test at 319 FPS
Z-RAM's historical Z.68 introduction: 8.5 g stainless steel, the First Strike FSC test at 319 FPS, loading demonstration, impact observations and warning.
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FSC PowerPin Test: 30.1 FPS More on Average with the 10-Inch Barrel
The historical FSC PowerPin comparison: three barrel lengths, a 30.1 FPS average gain with the 10-inch barrel, test conditions and the original caveats.
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First Strike FSC Rifle Setup: Z.68 Projectile Test at 376 FPS
The historical First Strike FSC rifle test with Z.68 projectiles: 376 FPS, barrel and HP-system conditions, and the export-valve comparison announced at the time.
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Z.50 Prototype for Umarex HDR50/TR50: The Full Presentation
Z-RAM presents the Z.50 prototype in a standard Umarex T4E HDR50/TR50. The film explores fit and flight, not Joule or FPS output, and retains the changing weight and design statements of that development stage.
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Z.68v2 8.5 g: Z-RAM’s Original Product Presentation
Z-RAM introduces the 8.5 g Z.68v2, explains its revised shape and describes the MagMode and Z.68s developments then under way. The complete presentation is preserved below as a historical video account.
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Z.68s Length and Weight: Why Longer Does Not Mean Heavier
The Z.68s presentation describes a longer profile than the 8.5 g Z.68v2 shown beside it. But Z.68v2 also exists as a 10 g version, so the longer S design is not simply the heaviest...
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Z-RAM .68 Projectiles: Solid Steel or a Coated Steel Core?
Z.68v2 is described as a solid CNC-machined steel projectile. The military-green coated ball instead has a chrome-steel core inside a polymer shell; the steel content does not make their outer surfaces or shape the...
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Z-RAM Projectiles: From Prototype Feedback to CNC Production
Z-RAM uses Z.68 as an example of professional production reproducing its specifications more precisely than hand-made prototypes. Current projectile descriptions separately identify CNC manufacture, solid steel and surface finish.
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