

WE CT25 Drum HPA Adapter
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This quirky little adapter acts as an extended grip and lets you run a 400 round TM Drum in your WE CT25.
To install this adapter, you'll need a WE CT25 gas magazine.
Fit the included O ring to the base of the HPA adapter. Remove the baseplate of the gas mag, then use a hand clamp to compress the adapter onto the magazine shell, lining up and inserting the pins (fit the included O-ring ).
Fits weirdly well in the hand!
The CT25 cannot deal with too high PSI, as the slide returns to battery too fast for the next BB to cycle, you need to find a balance of PSI to feed.
*Drum mag not included with drum base. You can purchase drum here.
DO NOT EXCEED 150PSI WITH ANY AIRSOFT HPA ADAPTER.
ALWAYS USE AIR REGULATED BY A SECONDARY REGULATOR (EG AT200, WOLVERINE STORM, POLARSTAR MRS).
CHECK YOUR PSI BEFORE CONNECTING AIR TO A HPA ADAPTER.
NEVER CONNECT OUR EQUIPMENT TO PAINTBALL AIR TANKS OR CO2 TANKS.
NEVER CONNECT OUR EQUIPMENT TO A TIPPMAN STYLE HPA LINE
AIRTAC Adapters
Each of our adapters is designed to be low profile while reaching field limit FPS. We design and manufacture all of our products to the highest standard, and do not charge extra for ‘premium’ features. Where applicable this adapter features:- Lifetime Warranty (Our adapters have to be built to last)
- Injection moulded or CNC magwell that is impervious to BB strikes at point blank skirmish FPS.
- CNC or Injection moulded Feed Tubes and Magazine Catches for lifelong durability.
- Tuneability/compatability via integrated shim systems. Our adapters are designed to cope with 'airsoft tolerances'
- Gas Routers injection moulded from NBR, 1:1 with the factory gas router.
- Seal Test
- Firing test, for feed and recoil (we have over 100 guns on site for testing)
Compact MP5
Drum Adapter Info
- Compatible with TM MP5/ TM SCORPION Drum Magazines Available here
Also compatible with Jing Gong VZ61 drums, though these can be hard to source - 100+ BBs from a full wind
- Drum adapters include 2 25mm pins for installation of adapter onto drum
- Disassembly of drum and installation onto adapter can be seen below (you can skip the middle section of video as this is specific to TM MP7)
Key Information
- We use a US Foster Fitting as standard. This is the most common airsoft HPA fitting. EU fittings can be purchased separately.
- Some of our HPA adapters have a smaller internal volume than gas magazines. Because of this, you will need to use a PSI of 90–150.
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If you need higher FPS, you can:
- Fit a tighter barrel
- Use a longer barrel
- Use heavier BBs
- Fit an improved hop bucking
- If your replica has an NPAS fitted, we advise opening it fully.
- Do not exceed 150 PSI. Many airsoft guns will not see an increase in FPS past this, as the hammer may struggle to depress the valve correctly.
- Insert the HPA adapter with your bolt / slide locked back to minimise pressure against the nozzle loading arm.

