Winchester 140 Shotgun Front Sight

[senseibuddy]

I am looking for a front site for this shotgun. I bought one that the packaging said would fit Winchester (3mm) but its too big. Anyone know what size the front bead site is??

 

[HammondShooter]

I'm not sure of the size, but there is one listed on Numrich Gun Parts for the model with a ventilated rib barrel. It's part #3 on this page:
http://www.gunpartscorp.com/catalog/Products.aspx?catid=7432

Hope this helps,
Shane