Help ! Barrel upgrade my Huben K1

Hi my name is Pedro Marchett I have an Huben K1 Gen 1 and I'm over my barrel to complicated even for special Huben slugs so my goal is to buy a new LW barrel for my Huben but here is the catch there is to many options choked unchoked 12 grooves and Polygon, so anyone tested these different barrels with NSA Slugs .22 ?

Barrel options: https://spaweapons.com/collections/lothar-walther-22-airgun-barrels

Thanks for the help 



My best regards Pedro Marchett
 
As you listed spaw as a possible suppler perhaps contact them and ask, I would be surprised if you were the only one wanting to use nsa slugs.

Contact NSA slugs! Almost willing to bet if you inquire "what barrel might be best for your product" they can proffer some idea.

As your having machine work done (or you DIY?) if really wanting to use the nsa slugs have it set up for the one you want to use. 

LW does list some different twist rates on some "airgun" barrels now as well as stainless, been a while since I last looked at there site. What's the dia. of the stock barrel?



Keep us posted.



John