As in bolt and receiver. Only the tacitcal solutions one, and that is because of the dual spring bolt.
You can buy some, but they don't stock them and you would wait 4 weeks. Can get the receiver, bolt, trigger assemblies in a few different configuration options.
Or, just buy the pcs and assemble yourself. VERY easy to do. So special tools required.
Can buy dlask receiver and barrel, and they will press it together for you. You still have to assemble the other parts. But that is good practice for when you need to clean your rifle. You can take apart and reassemble easier.
Or find someone in your area to walk you through this. Some find it apprehensive, but there are a lot of "nutz" out there willing to lend a hand.