This is a bit more obscure than that, but mostly yes.

The real problem is that the army doesn’t want more tanks. They’ve asked congress to stop building armored vehicles. Don’t need money for tanks, want money for R&D.

Congress love building tanks because it falsely creates jobs in their districts. So more tanks. Most of these factories are located in red districts.

Too many tanks and they have to sell them. That’s how police can buy tanks.

Sell all your AR15? Most AR15 owners are in red states. There are direct correlation with voting republicans and owning firearms. So if you decide to sell you AR15 it might indicate you’d switch vote? It’s a stretch but less republicans, more jobs from other types of factories (e.g. Green energy related), less money to build tanks, less armored vehicles being auctioned off to police.