The 88 g-to-HPA adapter connects an 88 g CO₂-thread arrangement to a paintball-style compressed-air bottle connection. The current offer names the Umarex T4E HDX68/TX68 40 J variant and SIG Sauer MPX, and supplies one chrome-plated steel adapter without an HPA bottle. If you want to stay with CO₂ and keep two 12 g capsules unpierced until activation, the separately offered Quick-Piercing unit serves that different purpose.
What “88 g-to-HPA” tells you
The 88 g designation identifies the CO₂ connection format involved. It is not the adapter’s own weight, an included capsule quantity or a statement about how much air a bottle holds. HPA identifies the compressed-air side of the product’s role.
This is useful when comparing shop listings because “adapter” can describe several jobs. A part that changes a connection and a unit that houses CO₂ capsules may appear alongside one another for the same marker, but they do not provide the same gas source or operating function.
The supplied part and its dimensions
| Specification | 88 g-to-HPA adapter |
|---|---|
| Material | Chrome-plated steel |
| Length | 4.9 cm |
| Diameter | 2.5 cm |
| Supplied quantity | One HPA adapter; bottle sold separately |
The length and diameter help identify the physical part and assess the space it occupies. They do not describe the dimensions of a connected bottle or the clearance of an entire assembly. Buying this adapter therefore leaves the separate bottle and its approved connection requirements to be resolved for the actual marker.
Model variant and thread fit are separate checks
HDX68 and TX68 are regional names for the same Umarex T4E platform. The adapter’s description specifically names the HDX68 40 J variant, while TX68 also appears in its current title. The “40 J” wording identifies the listed variant; it is not an energy result created or guaranteed by the adapter.
Z-RAM also describes the part for setups with an 88 g CO₂ thread. That broader interface statement is useful for identifying the connection, but a matching thread alone does not establish the operating approval, sealing or clearance of a whole gas system. Keep the exact marker version and the manufacturer’s gas-supply requirements together when assessing the part.
Why HPA is considered—and what the adapter does not settle
A consistently regulated HPA supply can offer steadier pressure than CO₂ because it does not depend on CO₂’s liquid-to-vapor behavior in the cartridge. That is a general benefit of the gas supply, not an independent performance test of this adapter or every HDX68/TX68 configuration.
The regulator, valve, seals and marker design still influence consistency. The practical question is therefore whether your exact version has an approved, suitable HPA supply, not simply whether a bottle can be attached. The adapter’s dimensions and model list do not supply a pressure setting or a complete conversion plan.
A separate choice if you want to retain CO₂
The Quick-Piercing unit houses two 12 g CO₂ capsules and uses the outlet thread of a standard 88 g capsule. Z-RAM confirms that both capsules remain unpierced until deliberate activation. It is an alternative for a different gas-supply need, not an HPA bottle and not an extra component required with the HPA adapter.
The unit is listed at 220 mm long and 240 g, supplied without CO₂ capsules. Z-RAM’s current compatibility clarification treats HDX68/TX68 as a typical application rather than its only possible one; sufficient space and the exact connection still matter. Its product listing also excludes paintball gameplay, so that restriction belongs in the choice.
If the distinction between two 12 g capsules and the 88 g outlet is your next question, the Quick-Piercing guide to capsule sizes and the 88 g interface explains those terms and the separate ON/OFF adapter function.
Two different gas-supply choices
HPA 88g to HPA Adapter UMAREX T4E Series HDX68 TX68 40J Variant SIG Sauer MPX
One chrome-plated steel 88 g-to-HPA adapter, 4.9 cm long and 2.5 cm in diameter. The listing names HDX68/TX68 40 J and SIG Sauer MPX; an HPA bottle is not included.
View the HPA adapter
Quick-Piercing-System for Umarex T4E HDX 68 / TX 68 Pump Action Rifle
A separate CO₂ option with two 12 g capsule positions and a standard 88 g outlet thread. The capsules remain unpierced until activation. Supplied without capsules; the listing excludes paintball gameplay.
View the CO₂ Quick-Piercing unitGeneral Z-RAM viewing: the T4E model range
This short shop introduction includes the HDX among Z-RAM’s model families. It offers a broader view of the parts range after the gas-supply comparison, rather than an HPA-adapter demonstration.
▶ Play on YouTubeFind the Best Umarex T4E Parts at Z-Ram.net . HDR68 TR50 HDP50 TS68 Pepperball First Strike
Channel: Z-RAM
General Z-RAM viewing: product categories
The second shop clip moves from model names to the categories of Z-RAM’s own-brand products. It helps orient you in the catalog; the adapter and Quick-Piercing specifications are covered in the comparison above.
▶ 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.