The 10/22 has to be a takedown model that is threaded.
The cz 455 just has to be threaded.
Cash can be added either way.
The 300 blackout was built by brothers in arms in Cedar creek Texas. Has shot subs and supers good although it has had only 150 rounds through it.
Adjustable gas block
Rainier arms 9.5” barrel
Fail zero bcg nickel
Cash either way depending on value. I also have a lot of prepped brass, dies and bullets that can be added.
I can text pics if your phone interested. Five one 2 99 five one 27 seven