Ok. It's Sn is S002xxx. I shot it today. First 5 rounds at 7 yards were excellent. Bit low but virtually all in same hole (firing 2 handed, single action.)
But after about 30 rounds the group started getting ragged.
Turns out the barrel nut had loosened.
So here are the photos, one with it complete the other without the barrel shroud.
Yes it's a bit dirty. I will take it apart, super clean, lube, and put some guntite on the shroud threads before re-assembling.
I have feeler gages and it takes a 006 feeler gage!
And maybe those cool grips that look like they are made for it.
http://lbcustomgrips.com/grips/
Deaf