Z-RAM Z.50 vs Z.50v2 for Umarex HDR50/TR50: Identifying the Versions

Z-RAM's original Z.50 introduction identifies a 4.5 g steel projectile, while the Z.50v2 introduction identifies a 6 g stainless-steel version with side grooves. Both belong to the .50 family associated with the Umarex T4E HDR50/TR50. The useful distinction is the projectile's complete version name and stated weight, rather than the shared caliber alone. These are solid metal projectiles, not paintballs for paintball games.

The first Z.50 and the later grooved design

In the original-product video below, Z-RAM explicitly calls the Z.50 the first .50 version and gives its weight as 4.5 g. The speaker also identifies CNC machining and stainless-steel construction. This provides a concrete way to recognize which product an older Z.50 reference describes.

The separate Z.50v2 introduction names a 6 g stainless-steel projectile and calls attention to its side grooves. Those grooves are a documented design feature of the later version. They are more useful for identifying the product than a promotional phrase such as “new” or “back in stock,” which refers to the time of the announcement.

Why the 4.5 g listing needs a closer read

The shop title identifies the 4.5 g offer as Z.50, but parts of that same description call it Z.50v2. That naming inconsistency matters when matching an older video or previous order: the 4.5 g specification and the separate 6 g Z.50v2 offer remain distinct. If you need the exact version replaced, confirm that the named offer matches it before ordering.

The two cards below retain those separate offers. A six-piece pack is the quantity supplied, while 4.5 g or 6 g is the stated weight of each projectile. Neither number identifies the marker generation.

Keep the marker name separate from the projectile version

HDR50 and TR50 are regional names for the same Umarex marker family. The “v2” in Z.50v2 belongs to the projectile name; it is not a synonym for a TR50 Gen2. Likewise, a .50 projectile and a .68 projectile remain different calibers even when their product names share a version suffix.

If you arrived here while looking for the corresponding .68 family, the Z.50v2-to-Z.68v2 family guide explains that separate naming question. For the two .50 offers here, keep the version, individual weight and exact product title together when comparing your existing package with the shop listing.

The two .50 offers discussed above

6x Z.50 Z-RAM Steel Bullets for Umarex T4E HDR50 TR50 cal. 0.50

The offer titled Z.50, with six steel projectiles listed at 4.5 g each. Its description also uses v2 wording; confirm the exact version when matching a previous purchase.

View the Z.50 offer

NEW!!! 6x Z.50v2 Z-RAM Steel Bullets for Umarex T4E HDR50 TR50 caliber 0.50

Six Z.50v2 stainless-steel projectiles, listed at approximately 6 g each, with spiral side grooves. This is the separate .50 v2 offer for HDR50/TR50.

View Z.50v2

The early Z.50 prototype presentation

This longer presentation looks back at an early Z.50 prototype. It adds context to the later product introductions below; the prototype shown is not an identification guide for every current Z.50 offer.

▶ Play on YouTube

😯 Presentation prototype Z-RAM Z.50 Bullets for HDR50 T4E projectile (English Translation 2021)

Channel: Z-RAM

Z-RAM identifies the first Z.50 version

The speaker calls this the first .50 version and states 4.5 g. That original-product identification is the starting point for this comparison.

▶ Play on YouTube

Exploring the Power of 50 Cal iber: The Ultimate Bull ets for Umarex HDR50 TR68 etc.

Channel: Z-RAM

The 6 g Z.50v2 introduction

This later introduction names Z.50v2, its 6 g weight and side grooves. Its stock announcement belongs to the original video date.

▶ Play on YouTube

🔥Z.50v2 Steel Projectiles Are Back – Best Ammo for Umarex HDR50 TR50 Stainl. Steel 6g High Accuracy🚀

Channel: Z-RAM