The Umarex HDX68/TX68 Quick-Piercing System is the specific two-capsule product Z-RAM recommended for a TC68 stock-locking problem. The other adapter accepted two 12-g capsules and its mechanism worked, but the surrounding stock would not lock. The recommendation concerns the linked Quick-Piercing unit—not every adapter labeled 2×12 g.
Two capsules describe capacity, not the complete adapter
The Quick-Piercing unit has positions for two 12-g CO₂ capsules. The package supplies one adapter with those two positions; the capsules are separate. Sharing that capsule format does not give another adapter the same outer shape or locking interface.
The listed Quick-Piercing unit is 220 mm long and weighs 240 g. Those figures identify the offer you are comparing. For a stock-locking issue, the outer dimensions and the way the actual parts meet matter alongside the capsule label. A working capsule mechanism is not evidence that the surrounding stock can close.
What Quick-Piercing adds to the description
Quick-Piercing means that the two capsules can remain unpierced until deliberate activation. That is a specific function, not simply another name for any two-capsule adapter. Checking the complete product name and its function helps distinguish the linked unit from a different adapter with the same 2×12-g format.
The outlet uses the same interface as a standard 88-g CO₂ capsule. HDX68/TX68 is therefore a typical application, not an exclusive model boundary. The actual connection and available physical space still matter. For the TC68 example, Z-RAM identified the particular Quick-Piercing product; that does not establish universal stock fit for all similarly named adapters.
Why an 88-g ON/OFF adapter is a different offer
The separate ON/OFF adapter shown below is intended for an 88-g CO₂ capsule. Its shutoff function allows a partially filled capsule to be used again. It does not provide the two 12-g capsule positions of the Quick-Piercing unit.
The distinction is practical when browsing: choose the Quick-Piercing offer for its two-capsule, on-demand piercing function, or investigate the ON/OFF offer when the requirement concerns an 88-g capsule and shutoff. They are alternatives to understand by function, not a combined assembly prescribed by this guide. Where the question is whether a stock will close, match the exact product before treating capsule capacity as proof of physical fit.
For the separate question of what connects to what, see the Quick Piercing guide to the 88 g outlet and ASA interface. It separates the capsule holder's outlet from the connection required by the next component.
Product details and availability
Quick-Piercing-System for Umarex T4E HDX 68 / TX 68 Pump Action Rifle
One Quick-Piercing adapter with positions for two 12-g CO₂ capsules. Capsules are separate.
View the Quick-Piercing unit
ON/OFF 88g Adapter HPA System Paintball markers RAM weapons
Separate ON/OFF adapter for an 88-g CO₂ capsule; a different function from the two-capsule Quick-Piercing unit.
Compare the 88-g ON/OFF adapterThe Z-RAM model range
This short introduces the wider Z-RAM parts range. It is not a Quick-Piercing or TC68 stock-fit demonstration.
▶ Play on YouTubeFind the Best Umarex T4E Parts at Z-Ram.net . HDR68 TR50 HDP50 TS68 Pepperball First Strike
Channel: Z-RAM
More parts categories at Z-RAM
A separate short tour of the shop’s parts categories, for readers exploring the wider catalog.
▶ Play on YouTubeThe Ultimate Shop for RAM Tuning Parts: Ammo, Valves, Chambers, and More HDR50 TR68 FSC TCP
Channel: Z-RAM
Important Legal Notice
Laws and regulations governing the purchase, possession, installation, modification, and use of the products described on this page vary by country, state, and local jurisdiction and may change. Before purchasing, installing, modifying, or using any product, you are responsible for confirming that it is permitted in your location and for your intended purpose. Product availability or delivery does not mean that purchase, possession, installation, modification, or use is lawful in your jurisdiction. Z-RAM does not provide legal advice, and the information on this page must not be treated as legal advice. If you are unsure, contact the competent local authority or a qualified legal professional.