Do they know what protesters used?

I think you meant to say "firearm" instead of "weapon".
I also believe you meant "Tarrio" instead of "Torres".

This isn't starting out well for your argument. You have made 2 demonstrably incorrect statements so far.

Furthermore, neither indictment against him charges Tarrio with any firearms violations.

https://www.justice.gov/usao-dc/case-multi-defendant/file/1480986/download
https://www.justice.gov/usao-dc/case-multi-defendant/file/1510966/download

A magazine is not a firearm. The ATF classifies only certain parts of a firearm as being the actual firearm. A barrel, for example, is not a firearm - neither is a trigger, a grip, or a firing pin. For an AR-15 (most firearms really) it's the lower receiver which is considered the firearm and must be serialized (for commercial firearms). While a 30 round magazine is illegal in DC, it isn't what Tarrio was arrested or indicted for.

And yet, you still knew what i was communicating.

Because I'm more intelligent than you.

Yup keep up with the torres', and firearms.