Thanks @Keystone19250 & @OkiePewPew. Conceivably, could I buy a full upper and would that simplify the barrel switch (gas block, gas tube, etc)? Or am I way off base?
Understood about the brace to stock switch.
Part of me likes the idea of having one AR lower receiver that I could switch...
I'm the happy owner of a new Saint 5.56 pistol, and looking for clarity as I am fairly new to AR-15 world.
While I intend to learn the weapon in its standard configuration, I would eventually like to make modifications (barrel length, stock, etc.). Are there any restrictions on barrel length or...