Does www.fastfire.biz actually sell automatic bullet-firing guns?

www.fastfire.biz had an ad in the back of a magazine of Shotgun News i picked up the other day, advertising that they sold a wide variety of full auto guns chambered in .25acp (like a Browning Baby) that apparently would be mailed to the door of anyone over 18 years old. I looked through their site, and at first it looked like this was all just airsoft guns, but it doesn’t mention airsoft anywhere, only .25 (and .25acp specifically in a few places) which is not airsoft caliber. So am i to understand this site would allow an 18 year old to order a full auto .25acp UZI with silencer for 0 after you add ammo, and legally do whatever they want with it? I mean sure .25acp is not a very lethal round, about like a .22short, but still, an automatic firearm is still an automatic firearm, so how is this not a huge federal crime to be selling automatic handguns to people under 21 with no FFL license requirement on the shipping?

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Does www.fastfire.biz actually sell bullet-firing automatic guns?

www.fastfire.biz had an ad in the back of a magazine of Shotgun News i picked up the other day, advertising that they sold a wide variety of full auto guns chambered in .25acp (like a Browning Baby would use) that apparently would be mailed to the door of anyone over 18 years old, no licensing needed. I looked through their site, and at first it looked like this was gonna be just airsoft guns, but it doesn’t mention airsoft anywhere, only .25 (and .25acp specifically in a few places) which is not airsoft caliber. So am i to understand this site would allow an 18 year old to order a full auto .25acp UZI with silencer for 0 after you add ammo, and legally do whatever they want with it? I mean sure .25acp is not a very lethal round, about like a .22short, but still, an automatic firearm is still an automatic firearm, so how is this not a huge federal crime to be selling automatic handguns to people under 21 with no FFL license requirement on the shipping?
Why did i post this in hunting? Well i’ve tried posting gun questions in general outdoors with very little result compared to the hunting section (where all the gun guys browse). I admit i believe the Hunting section should be just hunting, but i also believe it is the most appropriate area currently for gun questions, until they create a seperate "shooting sports" group in outdoors for something to cover target shooting, paintball and airsoft, and everything else that currently has to answer under Hunting although it really shouldn’t.

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Where can i buy a legit suppressor for a handgun? will every handgun adapt to a suppressor?

Will this process make it legal for me to buy a suppressor in the US?
this is straight out of a link from Wikipedia.
it say’s "38 out of the 50 states" does that include IL?
anything else i should know about suppressors?
no i am not going to kill anyone, i just like having unique things.

North America
In Canada, a device to muffle or stop the sound of a firearm is a "prohibited device" under the Criminal Code.[14] A prohibited device is not inherently illegal in Canada but it does require an uncommon and very specific prohibited device license for its possession, use, and transport. Suppressors cannot be imported into the country.[15]
The United States taxes and strictly regulates the manufacture and sale of suppressors under the National Firearms Act. They are legal for individuals to possess and use for lawful purposes in thirty-eight of the fifty states. However, a prospective user must go through an application process administered by the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), which requires a Federal tax payment of US0.00 and a thorough criminal background check. The 0.00 buys a tax stamp, which is the legal document allowing possession of a silencer. The market for used suppressors in the U.S. is consequently very poor, which has driven innovations in the field (buyers want the height of technology, because they are basically "stuck" with the purchase). Primitive suppressors are available in other countries for under US,[16] but they are usually of crude construction, using cheap materials and baffle designs that were obsolete in the United States by the 1970s. While suppressors in the US are more expensive (hundreds to thousands of dollars), they are generally built with highly advanced baffle stacks and exotic materials like Inconel and high-grade heat-treated stainless steels.[original research?] Several states and municipalities explicitly ban any civilian possession of suppressors
here is the link fatefinger; http://en.wikipedia.org/wiki/Suppressor

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need help determining this gun law?

A person must be at least 18 years of age to purchase a rifle or shotgun. To purchase a handgun from a licensed firearms dealer, you must be at least 21 years of age, pursuant to federal law. For statutory regulations concerning underage persons possessing firearms, refer to Virginia Code §18.2-308.7, possession or transportation of certain firearms by persons under the age of eighteen.

§ 18.2-308.7. Possession or transportation of certain firearms by persons under the age of 18; penalty.

It shall be unlawful for any person under 18 years of age to knowingly and intentionally possess or transport a handgun or assault firearm anywhere in the Commonwealth. For the purposes of this section, "handgun" means any pistol or revolver or other firearm originally designed, made and intended to fire single or multiple projectiles by means of an explosion of a combustible material from one or more barrels when held in one hand and "assault firearm" means any (i) semi-automatic centerfire rifle or pistol which expels single or multiple projectiles by action of an explosion of a combustible material and is equipped at the time of the offense with a magazine which will hold more than 20 rounds of ammunition or designed by the manufacturer to accommodate a silencer or equipped with a folding stock or (ii) shotgun with a magazine which will hold more than seven rounds of the longest ammunition for which it is chambered. A violation of this section shall be a Class 1 misdemeanor.

I want to buy a gun that is semi-auto and it doesnt have a threaded barrel, therefore cannot be equipped with a silencer, and has a magazine that holds 10 bullets. base on that context its considered just a rifle correct? which means any 18 year old person can buy it right? but if I purchase a magazine that holds more than 20 it becomes an assault rifle right? so legally if I don’t buy a magazine that holds more than 20 bullets before I’m 21, I can legally buy and own the gun as long as it doesnt hold more than 20 bullets?