We hPa hicap

Hpa hicap magazine for WE stanag gbbr:s
Fits for example M4, hk416, scar-l, ptw, l85 etc.
Does not require modifications to the gun. Works/tested with 90-120psi on thee different m4:s and a scar-l.

BB:s can be filled without disassembly with speed loader etc. Filling straight from a bottle by removing a rubber plug. 
Filling from top is also possible but requires tools 

6mm hose with EU or US foster fitting. Can be upgraded to 8mm hose but I don't have foster fittings for that.

Full auto works fine with redline sfr for example. Full auto may be finnicky with low refresh rate regulators but semi works fine. 

These are not hacksaw&jbweld abominations. 

Located in Finland. Delivery costs for example in EU are about 20-30€