Any good gunsmith can find or make parts for your shotgun. It might take several weeks to a year or more. Parker Brothers are a top of the line shotgun, and a shotgun in working shape is worth more than a broken one. Do some checking around at a local gun show, or surf the web for parts.
al number indicates that your Parker shotgun was made between 1866-1868.This covers the serial number range of 0-6,800.
Try e-gunparts.com
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I would start my search at Numrich Gun Parts Corp.
what is it worth
10-10000 USD or more depending on specifics
We have parts for that model. sales@countrygunsmith.net
I have parts for that model. sales@countrygunsmith.net
Numrich Gun Parts Corp. online at ww.gunpartscorp.com
You can find parts for many westernfield shotguns at Numrich gun parts. WWW.e-gunparts.com
12 gauge.
Try e-gunparts.com