There has been no announcement to discontinue either the 252 scout or the left handed 452. Naturally anything could happen, I would not be in a panic. Then waiting too long can be a risk.
Sad to say the future for the 452 and 453 right handed models looks pretty bleak. I did not get a 22mag right hand when they were available. I missed that boat. I did get a 453 in 22lr. Very nice gun a lifetime keeper for me.
A lot of guys on rim fire central pick up scouts and mount them in factory American model stocks ( adult stock ). They seem to make a handy hunting rifle.
