A friend of mine bought one. He knows very little about these guns.

Can anyone fill in?

The barrel is bored out and sleeved with a brass .25 tube.

There is some work done to the stock, but not sure whether by Harper or some Don Robinson type (there is a heart - yes a heart - inset into the RHS of the stock on the other side of the cheekpiece)

It's not a particularly attractive gun.