FNC barrel, bolt, bolt carrier

[Gracie]

I have a bolt, bolt carrier and barrel all from the same semi fnc that I bought for parts. I would like to know their approximate value as a set. Acquired the rifle from a friend and I know that it only had approximately 100 rounds fired. I also have the complete lower and other miscellaneous parts. Had to give up the upper due to CT state law.
I currently have a FA para and a NIB FA with fixed stock. Any info much appreciated.

 

[dash]

Maybe 2000+. If you put them on GB, I'm sure a bidding frenzy would happen. I'd think more if sold separately.

 

[zealander]

Do you have a gas block available, either separate or on the barrel?