Memes

That article disagrees with the second part of your comment. It says that the Welrod replicas are rare and mostly used by veterinarians, and looking them up, they've only been available for import to the US since 2021.

I don't know where you got your 300 million figure from. Wikipedia puts the total number of civilian firearms in the US at about 393 million, and that includes shotguns, hunting rifles, etc. The most popular pistol in the world I think is the 1911, and I imagine that holds true for veterans as well, and there have been about 4.3 million produced in the past 110 years. The most produced handgun is the Glock, estimated between 10 to 20 million guns.

It's also not confirmed that that was the pistol he used, just suspected. I saw people talking about how you'd potentially have to manually cycle a regular semi-auto pistol like he did if you were using a suppressor and subsonic rounds because they wouldn't produce enough force to cycle the gun on their own.

Edit: You fixed your comment while I was writing this, but I'm gonna leave it unedited for the info.