Gunsmithing Shilen Barrel ID

[Klemm]

I have a barrel I picked up. It is a Shilen. It is marked 224 Shilen XX S 5 9.
5 is barrel contour
9 is twist rate
S is stainless
Is the XX for match grade or select match grade
Any ideas?

 

[bhoges]

Let me check I have a blank sitting around. I think the select match is marked SM.

 

[bhoges]

yup should say Shilen on top and on left side SM.

 

[Klemm]

Thanks