Need help

[Stone]

Have any of you guys ever heard of or purchased from GLOCK GUNS SHOP? Its an online firearm dealer but a few things there has that little guy in the back of my head waving the red flags. I added the pistol I wanted to my cart and went to checkout and the only options they have are: Zelle, Cash app, and Bitcoin. Out of the hundreds and hundreds of orders I have placed online this is the first place that doesn't take a credit card, first red flag. I did some recon on Zelle and cash app and they clearly state to only send money to "people you know and trust"
Without using a credit card I have zero recourse if things go south. They also don't have an address or phone number listed on their site, second red flag.

The site looks nice but lacks things like descriptions of the actual firearms and whats included, like mags, back-straps, etc...
Even if you haven't heard of them or used them please chime in and give me your opinion. On the flip side they did answer my email real quick but at the end of the day, so would a scammer... I wonder how I can get some credible evidence from them to establish trust?? Maybe ask for a copy of their FFL??

Here's the web site: https://glocksgunshop.com/

As the old saying goes, when there is doubt, there is no doubt... TIA!