need parts

I have an older model (cheap) winchester model 290 , 22 auto. Question where can i buy parts ? The magazine tube has a plastic part that is connected to barrel near the sight. Mine has (due to age) cracked and broken. help !!!!

Here are some places to try. Calling or e-mailing is probably better than assuming their inventory lists are totally up to date.

www.nulineguns.com/category_part_84_2_21_84.php

www.gunpartscorp.com/catalog/Products.aspx?catid=7394

www.gun-parts.com/winchesterrifle

E-bay, gunsamerica, etc.

There are others, but I have brain lock today.