Just a word of caution!
There are many websites that are run/made or monitored by the ATF regarding manufacturing firearms/suppressors/full auto. When you log into websites for information "Your information" is also picked up. Everything on the internet is open the everyone.
Thinking that you may save money and get around the ATF regulations/laws because someone puts it on the internet may not be exactually legal. Look up the ATF first for the "LEGAL" information. Like I said the ATF puts out websites "Trolling" for any looking for illegal activities.
If you don't know what you are doing-just the fact that you are trying to purchase something that is illegal-BUT YOU DON'T KNOWIT IS- doesn't give you a defense from prosecution.
Give all of you an example. There were websites for selling the "Sear- Fire Control Group" that you could put modify a AR-15 to make full AUTO.. These sites are mainly taken down now, but 10 years ago, were operated mostly by the ATF. If you purchased these "Kits" paid the money=you could have been prosecuted for the purchase of these parts to make a full auto weapon.
Same thing can happen NOW with suppressors, if not following the ATF.