Try Browning, gun shops, gun shows, pawn shops, want ads, for sale ads, egunparts, Shotgun News, estate sales, garage sales, on line auctions.
With the serial number that you provided,your Browning T-bolt rifle was produced in the year 1966.Which is identified by the suffix X6.
Readily available from Browning.
There are a number of websites that carry parts for dirt bikes. TBolt USA is one such place. Orion Pit Bikes is another. You might also wish to check Factory powerhouse.
Try Browning or egunparts
Contact the Browning Service Center at the link below.
You can start your search at browning themselves,if you have no luck you may want to go to numrich gun parts corp.
If this is a Browning rifle, contact the Browning Parts and Services Dept. at the link below.
Check the attached link and look up obsolete gun parts with Browning. Your gun was made in 1955
Made in 1976. Try the Browning Customer Service and parts dept at the link below.
The the "Gun Parts Corporation" or Gun Broker in the parts catagories
No
Browning has parts made in numerous factories. Belgium, Portugal, Japan to name a few.