GUNSMITHS...........

Frank Glenn.  American Handgunner Magazine Top 100 Master Pistolsmith.  Specializes in Colt Revolvers.
http://glenncustom.com/

Len Specklin-Spartan Firearms.  Master Pistolsmith, trained at the Colt factory by a legendary Colt gunsmith.
https://bpczubak.wixsite.com/spartanfc

Ron's.  Said to be near the level of gun restoration of Doug Turnbull.
http://www.ronsgunshop.com/

MM Gunsmith.   Workesd for Interarms as their gunsmith.  Does Walther and others.
http://www.mmgunsmith.com/

Smith Gun.  Top gunsmith.
http://smithgun.com/

GENERAL GUN PARTS.........

Gun Parts Corp.
http://www.gunpartscorp.com/

Jack First.
https://jack-first-gun-parts.myshopify.com/

Bob's.
http://www.gun-parts.com/index.html/

Wisner's.
http://www.wisnersinc.com/

Hoosier.
http://www.hoosiergunworks.com/

Poppert's.
http://www.poppertsgunparts.com/index.htm

Fusion.
https://www.fusionfirearms.com/parts

Everygunpart.  Sells scrapped guns.  Hold on to your wallet.
https://everygunpart.com/

Amhurst.
http://www.amherst-depot.com/gunparts.htm

Ahlman's
http://www.ahlmans.com/

Chestnut Ridge.
http://www.chestnutridge.com/

Earl's.  Walther parts.
http://www.carlwalther.com/

Fulton Armory.  
http://www.fulton-armory.com/

Havlin.
http://www.havlinsales.com/

VTI Replica Parts.
https://www.vtigunparts.com/store/default.asp

Lee's.
http://www.leesgunparts.com/

North Ridge.
http://www.northridgeinc.com/

Nu-Line.
http://www.nulineguns.com/index.php

Orion-7.
http://www.m1garandrifle.com/

Out Back.
http://www.outbackgunparts.com/index.html

Sarco.
http://www.sarcoinc.com/

MGW.
http://www.midwestgunworks.com/page/mgwi

Schuldershot.
http://www.schludershots.com/

Garand Gear.
http://www.garandgear.com/index.php

Surplus Corner.
https://www.centuryarms.com/surplus-corner

Action Works.  Pistolsmith.
http://www.theactionworks.com/

Hyatt.  General work.
https://www.hyattgunstore.com/retail/gunsmithing/

APW/Cogan.  Top gun refinisher and gunsmith.
http://www.apwcogan.com/

Thanks, I just struggled sorting out the ball, spring, retainer and buffer that fits in the action rod of my 1187. It has over 35k rounds through it without a problem. Then the cocking handle flew off so I had to find the correct fix.

Anyway, now is a bad time to get parts. Everything is out of stock, and Remington is closed. I managed to get parts in all sorts of odd places. On line at several vendors, and also hitting a local gun shop. I have enough parts to redo two more action bars (I have 2, 12 ga 1187s).  

It was hard to do since there are no Uchoob videos covering something this detailed. Live and learn. Now I can look at your sources. Thanks again.

Numrich for gun parts: https://www.gunpartscorp.com/

They use schematics to help you chase down the part your looking for.

Remington factory parts

Connected to the current owners of Remington / RemArms. Best to search using the Remington part # (like F123456 if you can find it from old schematics.

Seems like this owner of this site would merit a mention . . .

https://www.brownells.com/

Remington is still in business........They stopped producing the model seven and 11-87, but they are still making the 1100...that said I would try them..........

Chestnut ridge is dead.