Can one just buy complete uppers and change calibers?

[Zforzachariah14]

Last question, I am looking at building my own barrel, is one better than the other, Crowned 5R rifling or Hand lapped 5R rifling?

 

[CTS Tactical]

Last question, I am looking at building my own barrel, is one better than the other, Crowned 5R rifling or Hand lapped 5R rifling?

All barrels are crowned even if they are threaded. Hand lapped is better if they are truly hand lapped. Smooths any rough areas and takes less break in. 5R generally causes less resistance because no two lands are directly across from each other, generally resulting in higher velocity than a traditional rifling.

 

[Zforzachariah14]

All barrels are crowned even if they are threaded. Hand lapped is better if they are truly hand lapped. Smooths any rough areas and takes less break in. 5R generally causes less resistance because no two lands are directly across from each other, generally resulting in higher velocity than a traditional rifling.

Thank you sir! I will choose the hand lapped barrel then.