CTM HPA M4 MAGAZINE ADAPTER FOR Hi-CAPA- BLACK/ GOLD CTM-KIT-0371
CTM HPA M4 Magazine Adapter for Hi-Capa (Black/Gold) — enables use of M4 AEG magazines and HPA feed on Hi-Capa pistols. Durable and compatible with WE, TM, KJW, Armorer Works and more.

CTM HPA M4 Magazine Adapter for Hi-Capa — Black / Gold
This adapter allows the use of M4 AEG magazines with High-Pressure Air (HPA) feeding on Hi-Capa pistols, delivering stable performance and reliable operation for airsoft skirmishes.
Usage
Requires: 1) a compatible M4 AEG magazine, 2) a paintball tank with a low-pressure regulator (0–140 psi), and 3) an HPA line with Foster/US quick disconnect. Standard green gas operating pressure is ~120 psi depending on temperature. We recommend running the pistol near this range and avoiding pressures above 140 psi to prevent excessive wear.
Construction & Materials
- Body: glass-reinforced nylon (strong & lightweight)
- Release button: CNC 6061 aluminum
- Valve: 1215MS free cutting steel
- Weight: 107 g
Compatibility
- Works with M4 AEG magazines (e.g. PTS Syndicate SpeedQB EPM and similar)
- Compatible with Hi-Capa from WE, Armorer Works, Tokyo Marui, KJW, SSP and others
- Compatible with CTM AAP-01/C CNC Magwell
Package Contents
- Hi-capa HPA M4 Magazine Adapter with rubber ring x1
- 2.5mm x 105mm hex head screw with nylon gasket x1
- Universal feed tube x1
Benefits
- Enables high-capacity M4 AEG magazines with HPA feed
- Durable construction for repeated field use
- Quick and secure installation with ergonomic release
- More consistent firing rate vs gas systems in variable conditions
- Recommended to use magazines with strong springs; replace worn springs with superfeed springs
Warnings
Do not exceed 140 psi. Higher pressures may accelerate wear or damage internal pistol components. Avoid leaving magazines fully loaded for long periods to prevent spring fatigue.
Technical Specifications
| Item | Specification |
|---|---|
| Brand | CTM |
| Model | HPA M4 Magazine Adapter for Hi-Capa (Black/Gold) |
| Body material | Glass-reinforced nylon |
| Release button | CNC 6061 aluminum |
| Valve | 1215MS steel |
| Weight | 107 g |
| Recommended pressure | ~120 psi (do not exceed 140 psi) |
| Compatibility | WE, Armorer Works, TM, KJW, SSP Hi-Capa; M4 AEG magazines (e.g. PTS EPM) |
| Package | Adapter, 2.5x105mm screw, feed tube |
Returns Policy
E-tactical.store recognizes the right of withdrawal as provided by the current legislation D.Lgsl. 206/2005. The useful term for availing of this right is 14 calendar days from the receipt of the goods within which the Customer is required to communicate it by registered letter with return receipt to the address:
Via Acque Alte 135/Bis
04100 Borgo Podgora (LT) - Italy
Phone: +39 331 7502815
P.I.V.A. 02995700594
In the letter requesting to exercise the right of withdrawal, it is necessary to indicate the details of a bank account in the name of the customer who concluded the order to proceed with the refund of the amount due.
Shipping
E-Tactical Store ships throughout Italy, including the Italian islands and abroad.
- Shipping costs to Italy and the Italian islands start from € 6.90 and vary in relation to the weight of the package. Shipping is free for orders over € 99.
- International shipping costs start from € 15.00 and vary according to the weight of the package. Shipping is free for orders over € 499.
The payment methods available are:
- Cash on Delivery (NO additional costs, Available only Italy and Italy islands)
- Paypal e Credit card
- Postepay (Available only Italy and Italy Islands)
- Wire transfer
Shipments will be made by GLS express courier. The purchased goods travel at the risk of the buyer, we are not responsible for damage caused by the GLS carrier.
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