Using full words really is not that hard.
Having been forced (at&t cable broke) to use only my phone to connect to THR for four days, I can say that a mobile device really encourages brevity, for having to peck out letters on a small keypad.
Now, if a poster has included their location in their information, so that they might be international, I do try to not use contractions, idiom, and the like. I try to shift to all SI notation, too, so that Google Translate is not rendering things in furlongs per square newton or some such.
And it can be tough sledding. Most of us, here, tend to refer to the 1934 GCA as NFA, the National Firearms Act, and usually only in respect to Title One of that act.
We sometimes refer to GCA 68 to refer to the specific portions of 18 USC 922 (Title 18 United States Code ("Crimes and Criminal Procedure") Section 922, titled "Unlawful Acts"; which gave us the concept of Federally licensed dealers, the 4472, and Prohibited persons (and just a mere 50 years ago).
Occasionally, there will be references to Hughes '86 (or pre and post 86), which refers to the Hughes Amendment to the Firearms Owners Protection Act (aka FOPA) which closed the machine gun portion of the NFA registry.
We tend to recognize RKBA as the Right to Keep and Bear Arms.
We are generally flameless around here (unlike other places on the 'net), if you see something that makes you go "huh?" just ask. No guarantees you won't get at least one smart donkey answer, but you will find out.