I would say if the price is right, get it. From what I am seeing its considered a moderately rare rifle. Only imported into the united states for 2 years.
This guy seems helpful, talking about the .223 chambering of it. Made in japan by Howa. Imported into the united states for 2 years by smith and Wesson.
Probably a fantastic rifle.
The guy mentions something about smith and wesson doing a recall involving the bolt sleeve. You might want to look more into that.