And "gun grab", at least in the Right to Keep and Bear Arms (RKBA) community, includes lessor things that confiscation. NY state's "no new 10 round magazines, and it's a crime to load more than 7 rounds in the ones you have, worse if you're outside your house", might not precisely match the words "gun grab", but English isn't a precision language. For example, NY state residents wanting to buy new guns face very constrained choices right now.
ADDED: Constrained in that most semi-auto guns come with > 7 round magazines. Manufacturers or 3rd parties will have make new ones limited to 7 rounds, and if you want to buy one, you'll have to get that SKU, or find a cooperative out-of-state dealer who will swap magazines. Read Emily Miller's adventures in getting her preferred gun model into D.C. for an example of this; there the limit is 10 rounds.
That's worse than a 'gun grab' in my opinion.
This is the only thing that can get "the ACLU" (the national HQ and most but not all state units of it) against "gun grabbing", the realization that it can't be accomplished without gross 4th Amendment violations.
I don't see how this is true, unless we massively redefine "gun grab" from "confiscating private firearms that are currently legally owned" to "limiting the production and/or commercial sale of some types of firearms and firearm accessories".