I’m not seeing how it would hurt them too bad, they don’t get the stamp money. People will still pay too much for them. Even if prices dropped some they’d sell a shit ton more in quantity.
They don't get the stamp money.
The difference is in how NFA items are treated. With an NFA item is purchased there is a lot of paperwork involved but once all of that is satisfactory to the government, the seller can just mail or FedEx your suppressor to you. You don't even have to go to the gun store to get it.
NFA items are treated differently than regular guns, however the HPA will make it the same. Under the HPA buying a Glock and a suppressor will be the same process.
Silencer Central uses exclusively a specific online method for all of their sales. They can do that because NFA items have different rules than rifles or pistols.
Other manufacturers all use a variety of channels to sell suppressors including having a system where retailers can have them in stock (ie your local gun shop).
If they pass the HPA then almost 100% of sales will be forced to be done at the retail store level, just like any other firearms.
The problem is, Silencer Central does not have the infrastructure in place to get their products into retail shelves. If the HPA passes, first, they can no longer do those same types of online sales they are doing now, at least not in the same way.
Secondly they will have to try and build a new business model to go through retail stores and they will only have about 6 months to build up that capability.
Almost all the rest of the competition has more than one channel to sell products. Silencer Central has one, and that would be shut off if the HPA passes.
Hence they don't want the HPA.