BD Hi-Capa HPA Adapter 771 Black (HPA1)

BD Hi-Capa HPA Adapter 771 Black

Take your Hi-Capa build to the next level with the BD Hi-Capa HPA Adapter 771 in Black, now produced using high-quality 3D printing for precision fitment and lightweight performance. Designed for players who want reliability and custom performance, this adapter converts your gas blowback Hi-Capa pistol to run on an HPA (High-Pressure Air) system for consistent, efficient shooting.

Manufactured using durable 3D-printed materials, this adapter offers a strong yet lightweight solution without compromising on performance. The design ensures a secure and stable connection between your pistol and HPA setup, making it ideal for fast-paced gameplay such as speedsoft and competitive CQB environments.

With the ability to run external air and (where applicable) use M4-style magazines, you benefit from increased capacity, reduced reloads, and improved shot consistency. The clean black finish keeps your setup looking tactical while maintaining a modern, custom-built aesthetic.

Why Choose a 3D Printed Adapter?

3D printing allows for precise engineering and efficient weight reduction, making this adapter both practical and performance-focused. Combined with HPA, it delivers smooth, consistent shooting without the cooldown issues associated with gas systems.

Features 

• 3D printed construction – lightweight, durable, and precision-made
• Converts Hi-Capa gas blowback pistols to HPA operation
• Designed for Hi-Capa platform compatibility
• Enables use of external HPA air systems
• Compatible with M4-style magazines (where applicable)
• Consistent FPS and improved shot-to-shot reliability
• Ideal for speedsoft, CQB, and competitive play
• Sleek black finish for a custom tactical look

Please Note

• Requires HPA tank, regulator, and airline (sold separately)
• Designed for airsoft use only
• As a 3D printed product, minor surface variations may be present, but do not affect performance

Specifications

• Size: 100-40-63mm
• HPA Adaptor: AA11AM Mail
• Colour: Black
• Material: PETG HF
• Created: 3D Printer

3D Print Information 

This is a 3D-printed product developed by Ballistic Designs and its partners, freelance designers and supporters.

• Printed Using: Bambu Lab A1
• Filament Used: PETG HF (one of the hardest available)
• Print Quality Score: 5 – please see our 3D printed page for more info.

What to Expect

3D printing is a different process from traditional mass production. As such, slight differences in surface texture, small layer lines, or minor visual variations are perfectly normal and reflect the personalised nature of every item.

Trade and Wholesale 

For trade and wholesale prices, please see our Trade Accounts page on this website.