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Z-RAM technical knowledge
Practical product, compatibility and installation guides for Z-RAM systems.
The earlier Z.68v2 presentation describes rounder sides intended to reduce contact and the chance of catching in the barrel or magazine. It keeps the stated 8.5 g weight, separating a shape change from a...
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Z-RAM’s 10 g Z.68v2 test reports several energy results from separate FSC configurations. The first stock-barrel case is reported at 32 J; the other figures belong to later, changed test conditions.
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The 11 mm Z-RAM holder uses the Pistelle X-68’s original rail; the 21 mm version belongs to the rail on Z-RAM’s barrel cover. Both combine spare-magazine storage with a vertical-grip role.
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Z-RAM presents the Pistelle X-68 ASA chamber as an enlarged internal gas chamber made from anodized aluminum. Its advertised Joule figures describe conditional complete setups, not a measured output guaranteed by the chamber alone.
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Threadlocker secures a specified threaded connection; grease lubricates a specified surface. A video's preparation list does not make them interchangeable or approve either for every seal.
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The two-tone appearance in one Tec9 .50 presentation came from an accidentally selected cover made with different printing material. It is not presented as the intended finish of the matching cover range.
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Z-RAM lists its .50 Tec9-style covers beyond the full body kit, including standard HDR50/TR50 and HDP50/TP50 applications. Choose the plain exterior cover or the version with an integrated Picatinny rail.
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Both foregrips require a matching 20 mm Picatinny/Weaver rail. Compare the angled triangular form with the vertical grip, then check the different included hardware.
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The flexible stock is sized for a 50 mm HPA bottle; the separate cartridge stock is for standard 88 g CO₂ cartridges. Compare their fit criteria and included parts.
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The original ZDR50 is the housing introduced around HDR50/TR50 internals and a concealed Z-Extension. ZDR50v2 is a separate body-kit design associated with the EX25 valve. Black housing and grip-color choices do not identify the...
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Z.68v2 and Z.68v3 are separate versions within Z-RAM's .68 projectile family. The earlier presentation explains the rounded-side 8.5 g v2 design; the v3 introduction highlights side grooves and the Umarex HDR68/TR68 context.
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Z-RAM's first Z.50 presentation identifies a 4.5 g projectile; the Z.50v2 introduction identifies a 6 g design with side grooves. Here is how those versions relate to today's two .50 listings for Umarex HDR50/TR50.
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