Umarex HDB68 Buttstock Adapter Aluminum 7cm Length for T4E

The Buttstock Adapter converts a Umarex HDB68 T4E rifle into a true marker, eliminating the need for a hose. Constructed from anodized black aluminum, it offers durability and a sleek finish. Its compact 7 cm length fits seamlessly onto the rifle while the integrated O‑ring ensures a secure seal. Compatible with standard HPA air bottles and 88 g capsules when used with an intermediate adapter. The adapter features two diameters—1.5 cm and 2.5 cm—to match various barrel interfaces. Installation requires cutting the original cover, and the manufacturer disclaims liability for the modification.

Material
Aluminum, black anodized
Length
7 cm (2.8 in)
Diameter Small
1.5 cm (0.59 in)
Diameter Large
2.5 cm (0.98 in)
Weight
0.35 kg (0.77 lb)
Compatibility
Umarex T4E HDB68, HDR50, HDR68, HDP50
Integrated O‑Ring
Yes
Required Accessories
Air bottle, optional intermediate adapter for 88 g capsule