This is a set of common parts for my HPA adapters for glock type magazines.
2 springs (may be get from automatic pen and split it by two pice);
4 m3*8 screws;
1 m2*14 screw or any 2mm thing to fix button;
Hpa parts:
1 6mm hpa tube like this
https://aliexpress.ru/item/4000055396603.html?spm=a2g2w.orderdetail.0.0.96e44aa6aOi0wr&sku_id=10000000123829481
1 HPA foster to 6mm hpa tube like this
https://aliexpress.ru/item/1005005367878844.html?spm=a2g2w.orderdetail.0.0.78454aa6v70Rh8&sku_id=12000032764247155
1 Pneumatic fitting from M5 thread to 6mm hpa tube like this
https://aliexpress.ru/item/1005002569849007.html?spm=a2g2w.orderdetail.0.0.534d4aa6ktB3pP&sku_id=12000021198442062
1 KJW/WE/EC Glock magazine (These manufacturers use a standard M5 thread for the filling valve)
If you wont to use only ‘like smg’ hpa adaptors tou may use
instead of fitting, pneumatic tube and foster for pneumatic tube
the problem is:


fix the fitting in the screwdriver holder;
Take the file;

Turn on the screwdriver and grind the hexagonal part.
This steps nedds becose fitting after thread little wider then default filling valve.
Result is

Magazine prepare guide:
Remove bot plate;
Slightly unscrew the bolt from the bottom;
Remove spring with feeder;
Screw bolt from the bottom back;
Change default filling valve to fitting.
After it your magazine is ready to be used with my hpa adaptors:
straight
https://www.printables.com/model/1252453-m4-straight-hpa-glock
angled
https://www.printables.com/model/1239108-m4-angled-hpa-glock
https://www.printables.com/model/1309307-m4-angled-hpa-glock-v2
straight
https://www.printables.com/model/1244940-mp5-straight-hpa-glock
angled
https://www.printables.com/model/1239116-mp5-angled-hpa-glock
m4
https://www.printables.com/model/1244923-aap01-smg-like-hpa-adaptor
mp5
https://www.printables.com/model/1245455-aap01-like-smg-mp5-hpa-adaptor
The author marked this model as their own original creation.