I am going to order some barrel Blanks from Lothar Walther in Germany.
Barrels I am ordering is:
4.5mm Standard with choke 16mm od
4.5mm Polygon with choke 16mm od
4.5mm Stainless steel with choke 16mm od
5.5mm Polygon with choke 16mm od
If there are other sizes you want, please let me know. Look on this site, NOT the US site. https://www.lothar-walther.de/barrel-blank/airgun/?p=1 Please don't make up your own sizes or twist rates, I can order them yes, if you take 50 of a made up size.
I can order bigger calibers, but please note you will need a firearm license if you fit it on a rifle with more than 6 joule power.
I will be ordering in a week or two so any other sizes not on my list, please post here or pm me. Other sizes will require a deposit.
Also please note, these are air rifle barrel blanks, they need to be ported and cut for your particulate rifle brand, by you. They are not surface treated, so you do that yourself, weather you want it blued, painted, cerakoted or what ever.
The feedback that I have received from shooters using these blanks is that they are extremely accurate. you won't find better. These are all match grade blanks.