CTM HPA Hi-Capa Adapter for AEG M4 Mag – Blue / Silver

CTM HPA adapter for Hi-Capa pistols using M4 magazines
Do you love HPA setups and run a Hi-Capa pistol? Are you a pistol player who is not afraid to spam shots and standard pistol mags simply aren’t enough? Do you want to feed your pistol using AEG magazines for the M4 (AR15) platform? Or are you building the ultimate speedsoft setup? The HPA Hi-Capa adapter from CTM lets you use M4 AEG magazines (e.g., PTS EPM) with Hi-Capa pistols such as the SSP5, VORSK, Tokyo Marui Hi-Capa 5.1 / 4.3 and other TM-spec sidearms. It is the ideal solution for players who want to gain higher ammo capacity while fully eliminating cooldown issues caused by gas magazines. Thanks to precision-injected nylon reinforced with fiberglass and a steel magazine-well body, the adapter is lightweight, strong and durable. It is designed for HPA systems running 80–120 PSI. Pressures above 140 PSI may damage the pistol or the adapter. You can also read our article on how to assemble an HPA setup. This version additionally features an integrated anti-drop BB retainer and a lanyard loop for charms or accessories.

Installation guide for the adapter on a GBB magazine (magazine not included)

Key Features

Compatibility with Hi-Capa GBB pistols (e.g., SSP5)Allows attaching M4 AEG magazines to your pistol.
Injection-molded bodyPrecise manufacturing ensures high reliability.
US Foster connectorIntegrated and ready to connect to standard HPA lines.
Recommended pressure 80–120 PSIEnsures safe and reliable operation without damaging the system.

Technical Specifications

Compatibility: GBB pistols of the Hi-Capa type
Magazine type: AEG M4
Recommended pressure: 80–120 PSI
Material – adapter: Nylon with fiberglass reinforcement
Material – AEG mag catch: 6061 aluminum
Material – magazine body: Steel 1215MS
Weight: 107 g
Connector: QD US Foster (male)

Package Contents

HPA Hi-Capa to M4 magazine adapter
2.5 mm × 105 mm hex screw with seal
Feeding insert for installation into a GBB magazine