I email them I wanted to buy their new plenum. They said they cant ship it and i have to send in my gun. They said they will email me back cause they are busy with all the folks who also wanted the upgrade. That was beginning of this month. Now it's the 20th and no email back yet. My question is why cant fx just ship them to the customers? It would save time and also labor cost and shipping cost both ways. I know huma ships it to Europe customers for about 130 euro. But not to the US. Is fx scared people cant install it and will sue fx when they do something stupid and get hurt and blame fx bad quality control on their items? Most of us have watch ernest and others youtuber and we know how to take our guns apart and fix them. Also we can order parts and the old stock plenum with no issues. So why is the new plenum a issue for customers to install and buying other parts that also require taking the gun apart and reassembling it not a issue? If safety is the issuse. Wouldnt we have to send in our gun each time it wont cock, wont shoot, low fps, bad c3 ring, leaking, need new o rings, bad valves, etc?