Eh, I mean... that's tough because on paper they look very good, the studs are a good grade and the material and finish (at least based on the pictures) looks on par with the other reputable and established offerings.
Ultimately it's your call, I'm not one to turn away a potentially good idea; but at the same time it's very easy to lie and hide poor quality on a website vs. testing and experience like the other companies have under their belt. It doesn't help that "Sixty Auto" doesn't seem to have much notice as a company, at least as far as a quick search showed.
That's not to say don't give them a shot... but I'd be cautious. I liked the UTAS UTS-15 Shotgun a lot and bought one of the first 500 when they came out, unlike the handful of mall ninjas/"experts" who a.) didn't operate the weapon correctly (it's honestly easy to short stroke these bullpup shotguns if you don't consciously develop the muscle memory to pull it the extra inch or so than a traditional pump is since you don't have the feed ramp just behind the pump) and b.) UTAS did have teething problems with their "Gen 1" weapons and a good number of them got out before they were able to apply in-line changes to correct them. That combined with the Youtube hate train, artificially hyped "KSG Vs. UTS-15" train, and a bit less forgiving for a rather new technology weapon-wise; led to it getting a very bad reputation from the get-go that has been difficult to shake because Trolls get listened more to than facts. That being said, my UTS-15 has been running good except for one minor mis-feeding issue and the company was more than happy to take care of me as a customer even updating the weapon from "Gen 1 to Gen 2" spec for free (and later years after the warranty expired, gave me a good discount on updating my firearm to the "Gen 3" spec with the newest in-line changes an even threw in some stuff for free.)
Moral of the story? I like my shotgun (obviously), but more importantly... sometimes jumping on the "first" train of a new product/company/idea is very risky, but can have a great pay-off in the end. Or you can end up hosed, if UTAS wasn't willing to do the right thing and help their customers out while providing pretty damn good customer service; I could have had one very expensive paper weight signed "sucker" from them.
I'd shoot the company an email inquiring about their product and make it clear than while you're not trying to bash them or accuse them of anything, you really want to know honestly where their product stacks up against the competition and why you should consider their company and product over a competitor. Let them show you what kind of company they are and what kind of product they want to sell, that can be a good indication of a product's quality (both inherent and potential.) I think I might be getting a bit too over-analytical over this topic...
F*** it, either suck it up and risk trying a possibly good quality no-name brand or pony up for the known goods. lol