HI-CAPA-M4 adapter


89.90 € 


Combine all the “HPA”, “AEG” and “GBB” advantages in one system. 

  • Convert your Gas magazine to HPA and take advantage of the capacity of AEG Mid-cap magazine.
  • Tube BB's retention system equipped with a spring preventing all BB's from falling when you eject your magazine.
  • Ultra impact resistant SLS Nylon body for only 85g.
  • Quick to install kit.
  • Internal design facilitating the insertion of your magazine.
  • Compatible with M4 AEG chargers (design to the dimensions of the PTS EPM1 mark). 

A feature designed exclusively for players.



  • Check that the dimension of the inserting bead window on your magazine is the same as the image below for the Marui model.
  • Adapters are designed to accommodate magazine M4 mid cap  of the brand PTS (ref:EPM1), tHowever, the tolerance of the adapters may vary from model to model or from production series and may therefore require manual adjustment by the user via light sanding of the shims.

  • To ensure a perfect seal, we recommend that you use a wide-tipped screwdriver. The goal is to compress the O-ring as well as possible in order to create a maximum seal without damaging the screw head. 


We recommend that you follow the following video tutorials:


  • x1 Speedsoft Adapter
  • x1 Ball guide rod (Marui or We)
  • x1 JV LOW PROFILE valve or 1 Valve with EU or US inlet (EU / US Balystik compatible) 
  • x2 O-rings



Speedsoft HI-CAPA Adapter

Compatibility according to the chosen model

-WE Magazine

- MARUI magazine


Nylon PA12 (SLS 3D)


87 x 67 mm


 85 g



Max PSI  120 psi


 (The stated content concerns only the original standard product, excluding options, and may therefore vary depending on the options added).

* The replica shown in the photo as well as the accessories are for demonstration only and are not all included in the sale. Please read the “Content” section carefully!

We do our utmost to ensure that the colors in the images are as accurate as possible. However, the color of the product appearing on your screen may be slightly different from the reality.

Important : The 3D Speedsoft adapter is an exclusive custom-made product ordered and manufactured on demand (ie once your order has been validated and paid for). The processing time before delivery can reach 1 to 2 weeks maximum.

For the use of a magwell, we recommend the Airsoft Masterpiece S-Style model.
All other models may require adjustments.