I guess this would be the right place for this...

Training
http://www.arm.gov/sites/nsa/870.stm
aslet website shut down due to legal reasons
http://www.alpharubicon.com/leo/pumpshotgeli.htm

General Information
http://www.alpharubicon.com/leo/rem870.htm
http://world.guns.ru/shotgun/SH00-E.HTM
http://world.guns.ru/shotgun/sh17-e.htm
http://www.firearmstactical.com/briefs29.htm
http://www.remington.com/pdfs/shotgun.pdf
http://www.remington.com/whatsnew/brrls_choke/sgbct.htm
http://www.chuckhawks.com/index2c.shotguns.htm
http://www.borelliconsulting.com/evals/guns/rem870.htm
http://www.backwoodshome.com/articles2/ayoob031221.html
http://www.jtk3.com/laissezfirearm/870full.htm
http://www.blackwaterusa.com/btw2004/ar ... 22epp.html
http://www.gunshopfinder.com/gunarticles.html
http://www.homegunsmith.com
http://en.wikipedia.org/wiki/Remington_870
http://www.oegmag.com/RemingtonModel870.asp
http://www.remingtonsociety.com/rsa/journals/870
http://hunting.about.com/od/guns/l/aastremmag5b.htm
http://www.washingtonpost.com/wp-dyn/co ... 14558.html


Tools
http://www.brownells.com/
http://www.bhigear.com/browseproducts/Remington-870-Armorer's-Kit.html

Suggested Spare Parts
http://www.alpharubicon.com/leo/firearmspartslist.htm

From the book "Survival Gunsmithing"
Basic Parts Kit
*Firing Pin
*firing pin return spring
*extractor
*extractor plunger
*extractor spring
*right shell stop
*left shell stop
Complete Parts Kit
*includes basic parts plus
*ejector
*ejector spring
*ejector rivets (2)
*carrier assembly
*trigger housing pins
*magazine spring
*magazine spring retainer
*trigger housing pin spring retainer clips
*trigger assembly
*bolt
**complete trigger housing would easier to install than carrying all the individual parts

Firearms safety
http://www.remington.com/pdfs/sftybklt.pdf

Takedown/Cleaning
http://www.e-gunparts.com/DisplayAd.asp?chrProductSKU=956470&chrSuperSKU=&MC=
http://www.alpharubicon.com/leo/pumpcleaneli.htm
http://www.alpharubicon.com/leo/870brian.htm
http://refugeforums.com/refuge/showthre ... adid=66406

Owner's Manual
http://www.remington.com/pdfs/om/om_870.pdf
http://www.remingtonle.com/support/prtsvc/870_om.html

Modifications
http://refugeforums.com/refuge/showthre ... did=175266

Aftermarket parts
http://www.atigunstocks.com/
http://www.royalarms.com/
http://www.midwayusa.com
http://www.knoxx.com
http://www.riflestock.com/

Books
Books I have looked at or own
*Shotgunning for deer ISBN: 0-88317-237-2
*Survival Gunsmithing ISBN: 0-87947-060-7
*Troubleshooting your rifle and shotgun ISBN: 0695-81198-3
*Shotgun Gunsmithing ISBN: 0910676542
*Gunsmithing Shotguns ISBN: 0873419200
*Kuhnhausen Shop Manual from www.brownells.com
*Tactical Shotgun : The Best Techniques And Tactics For Employing The Shotgun In Personal Combat ISBN: 0873648986
*Do-It-Yourself Gun Repair ISBN: 0972280421

Books I haven't looked at
*Shotguns & Shotgunning ISBN: 0873495675
*The Gun Digest Book of Sporting Shotguns ISBN: 0896891739
*Gunsmithing Shotguns : A Basic Guide to Care and Repair ISBN: 1592280919
*The Gun Digest Book of Firearms Assembly/Disassembly, Pt. V: Shotguns ISBN: 0873494008
*Combat Shotguns (Greenhill Military Manual) ISBN: 1853675156

Other
*Remington 870 Armorer's Video http://www.booktrail.com/Video_Shooting ... ton870.asp
*various articles from "Guns and Weapons for Law Enforcement"

Stock Bolt sizes
1/4-28 thread (should be...)
870 express regular: 8" ?
monte carlo: 10.5" ?
ATI pistol grip:
Remington factory folder:
ATI stock with pistol grip:

=======================
870 Armorer's Kit

Forend wrench
*15/16 socket (brand ?)
http://img.photobucket.com/albums/v151/ ... wrench.jpg
*

Pin Pusher
*take a #1 Phillips screwdriver or 3/16" flat screwdriver with a round shank, and cut the screwdriver end off and round off that end. Use the end of the handle to tap the pins in, and the shaft to push them out.

========================
Like Brownells has...

And the add-on kit for the 1100.

*Gas-Orifice sizes for Remington Model 1100 shotguns from the "Do it yourself gun repair" book
http://img.photobucket.com/albums/v151/ ... rifice.jpg

O-ring sizes
*12 gauge 1100 : #33 rubber, #21 viton ?
*20 gauge 1100 : #32 rubber ?

FOR GOT ONE THING ON YOUR LIST!

CHECK THIS WEB SITE TO GET HARD GET PARTS< BOOKS<
AND GUNSMITH TOOLS...I HAVE USED THIS IN MY LAW
ENFORCEMENT www.brownells.com

TECH SUPPORT IS GREAT!

Thanks for the info..how much research did you DO?

Don't forget about the http://www.rem870.com