Is it safe to order a Huma moderator from Huma to the US?

Sorry, I speed-read your first post and missed the part about you wanting moderators.

Some time back (maybe last Aug or Sep) there was some discussion on AGN regarding a revision of policies at U.S. Customs which was impacting the importation of air gun moderators, as well as some air guns which had moderators. They were not being allowed to proceed, but being 'turned back.'

A little later there was discussion on the site that Krale was no longer accepting moderator orders from U.S. customers.

My personal experience is that I ordered a specific Air Arms moderator from a U.K. dealer, and it shipped about the middle of last August. Spent a good amount of time in USPS Status 'Processed Through ISC Facility' (which actually means arrived at that facility), then the status changed to 'Inbound Out Of Customs' on 10/14/2020. And that is how it has remained to this day.

The vendor already refunded my money, so I'm not even following the shipment any more. Was it lost by the USPS? Did it get stopped by U.S. Customs because it contained a legal air gun moderator? If Customs stops something 'illegal' do they return it to the sender, or seize and destroy it? 

I don't know the answer to any of the above questions. All I know is that I never received my moderator ordered from Europe last August. I don't think you have to worry at all about an Alphabet org door knock, but as far as receiving your purchased item, YMMV.

I have found Huma-Air to be great communicators. Drop them an email - If U.S. Customs is causing issues with legal airgun moderator shipments, they would know.
 
 . . . doing a search of the forums here using "ordered from huma" and I landed on this thread. A few others popped up too but they were a year or two old - this one looked relatively recent. 

I just ordered a reg from them a few days ago and . . . . crickets. Nothing. I got paypal notification within minutes that they have received my order but since then . . . . crickets.

I like what I read from a few of you above re: stuff showing up surprisingly quickly considering its coming from overseas ( for those of us in the U.S. ). I did shoot them an e-mail earlier today from work . . . . we shall see. I'm just looking for a status update.
 
That is odd and it sounds like something did not go correctly with the ordering process.

Every time I have placed an order with Huma-Air I will get an automated order confirmation from them nearly immediately. Sometimes it even comes before the PayPal notification.

I have found them to be very responsive to email requests. Hopefully you will wake up tomorrow and find an explanatory email waiting.