JV-Tactical HPA Adapter G17/18C/AAP to MP5

JV-Tactical HPA adapter (now ZZZ) + Tokyo Marui G17 magazine + Marui standard LL/Nineball purple seal for Glock (for WE and AAP, it may need to be replaced with a flat one). US connector. Everything works fine. It's been sitting in a drawer for almost three years, so it's worth lubricating as I have no way to check for leaks (I don't have hpa equipment anymore).
From what I remember, it's made of Nylon PA12 (MJF 3D).

It accepts Cyma aeg MP5 mags without any problems (short, straight, banana, bullets).

Price and shipping method to be determined. Item is located in Poland. I accept PayPal (fee on your side).