H&K 416 CQB Elite Airsoft Machine Gun airsoft gun

I had heard a few remarks about the Umarex/VFC AEG (Automatic Electric Gun) version of the Heckler & Koch HK416. Given that everywhere else the product was overpriced and I had an Amazon GC I purchased it. It came through from Pyramyd Air about a week FedEx Home Delivery. Let me say it is possibly the best AEG I have owned. The detail is FIRST rate and the operation is amazing, out of the box it fires ~350 FPS 18 RPS of 0.2g BBs. It is solid and balanced just the real HK416. My only issue I had was after a few dry firings the gearbox pin slipped out, I put it back in but it would continually slip out during usage. I shipped the AEG back to Pyramyd (prepaid) and they sent me a new AEG. And this one is functioning the same as my original but without the gearbox pin falling out. OUt of all the AEGs I own this is by far my favourite.