MP7 AEG from Umarex fully automatic with 0.5 Joule downgrade?

I recently found the H&K MP7 from Umarex on Airsoftmania, which is being converted to 0.5 joules specifically for the German market, allowing fully automatic operation. Unfortunately, this product is currently no longer available. My question is, are there any other suppliers offering this downgrade, and if so, which ones? Thank you in advance and…

Which battery is this for airsoft?

Hey, I just bought my first airsoft gun, the SAEG HK416 A5. Now I need to get a battery, and I'd like to get this one (the timeframe is already specified): https://youtu.be/D9DLF6KLzP4?si=BfUrxh9zR7n1bcYC&t=319. However, I just can't find it online. Could someone please help me? I'm open to alternatives. The 11.1V, sufficient battery life, and a…