Umarex TC68 HPA Stock: Will a 0.2-L Bottle Fit?

The shoulder stock in the Umarex TC68 HPA adapter kit fits a bottle with an outer diameter of exactly 5 cm (50 mm). A 0.2-L bottle can fit, but its capacity alone does not establish that fit. Match the bottle's outside diameter to the stock, then consider the marker-side connection separately.

Why 0.2 L is not a stock-fit measurement

The liter figure tells you how much internal space the cylinder has. It does not specify the cylinder's complete outside shape: two bottles with the same capacity can have different diameters. For this stock, 50 mm is the relevant physical dimension. A bottle described only as 0.2 L therefore needs a diameter check before you can choose a stock for it.

Z-RAM has confirmed the specific 0.2-L bottle with an ON/OFF regulator linked here for the kit's stock. That is a physical-fit answer for this bottle, not a recommendation for a regulator output or confirmation of an entire air-system configuration.

One kit, two separate fit questions

The Umarex T4E TC68 HPA adapter kit contains a threaded adapter and a polymer shoulder stock. The stock mounts on the bottle; the adapter provides the marker-side connection. These parts work at different interfaces, so a stock fitting a bottle does not establish that the adapter fits another marker.

This distinction also explains the offer's contents. You receive the adapter and shoulder stock, but no HPA bottle. The separate bottle-and-regulator offer is not a second version of the adapter kit. Check which part you need before comparing their prices or adding them to your order.

If you only need a bottle-mounted shoulder stock

The separate black flexible stock for 50 mm bottles is another genuine option. It is made from flexible material and is sold as a stock alone. It does not contain the Umarex kit's threaded adapter or a bottle.

That makes the comparison straightforward: the Umarex kit supplies an adapter and stock, while the flexible-stock offer supplies just the shoulder support. If the separate stock is the part you need, it is an alternative to compare—not a required extra stock to buy alongside the complete kit.

Choose by diameter and contents

For the TC68 kit's stock, start with the 50 mm bottle diameter rather than the 0.2-L capacity label. Then distinguish the holder from the marker connection and choose the offer containing the parts you actually need. This keeps a simple stock-fit question from turning into an assumption that every similarly named bottle, adapter and stock is interchangeable.

Product details and availability

Umarex T4E HPA Adapter Kit for HDC68 TC68 MagFed Marker

Threaded adapter and bottle-mounted polymer shoulder stock. The bottle is separate.

View the Umarex kit

0.2 LITER bottle incl 1100 PSI On/Off Slide Valve Air Tank Regulator 3000 PSI Umarex T4E FSC Valken Pistelle X-68- Option 1100 PSI output + 0.2 L bottle

Separately sold 0.2-L bottle and regulator package. Its bottle has confirmed physical fit with the kit's stock; this is not a regulator-output recommendation.

View the bottle offer

Z-RAM Flexible Buttstock Black 50mm diameter for 0.2L bottle

Flexible stock for 50 mm bottles, sold separately from the Umarex adapter kit.

View the flexible stock

The separate flexible stock

This Z-RAM short introduces the flexible stock and its 5 cm bottle-diameter fit. It does not demonstrate the Umarex TC68 adapter kit.

▶ Play on YouTube

🚀 www.Z-RAM.net 🚀 Z-RAM Handle, grips, buttstock for FSC, TCP, RAM Launcher First Strike Pepperball😎

Channel: Z-RAM

More from the Z-RAM shop

A short introduction to the wider Z-RAM parts range, separate from the TC68 stock-fit explanation above.

▶ Play on YouTube

Find the Best Umarex T4E Parts at Z-Ram.net . HDR68 TR50 HDP50 TS68 Pepperball First Strike

Channel: Z-RAM