Install & Cleaning

This page has some installation tips for the accessories I sell and also some cleaning tips.  On a regular basis I read post on gun blogs about some 870 issues that come from improper installation of an accessory or a weapon not being properly maintained.   I type 90 words a minute but hate retyping the same mess over and over so here it is all is on one page.

New Barrels:

Issues with extraction problems with the 870 HD barrels are all over the internet.  If you purchased one from me you should not have this issue as I polish the chamber, however, if you are using cheap ammo, you may.  The issue can be resolved very simply and since you need these two tools to clean your weapon you should build them anyway.

To resolve this issue you want to make two polishing rods.  One for the chamber and one for the bore.   See the below picture to see what they will look like.  Go to a building supply place and buy two 7/16th  hard wood dowels and a pack of 00 or 000 steel wool.   Take a full pad of steel wool and stretch over one of the wooden dowels and tape the bottom of it off.  This is you chamber rod.  Put the rod in your drill and polish the chamber of the barrel.  Hold the barrel and keep spinning the rod till you feel the barrel getting slightly warm.  Take the second dowel and either stretch 3/4 of a pad of steel wool over it or stretch a full pad out longer.  This is your bore rod.   Put this in your drill and simply run it through the barrel a couple times.   Both procedures are done "DRY".  You do not need solvents for these barrels.  These are smooth bore barrels and bore cleaner is not needed.   If the weapon is going to be put up for any length of time you can spray some oil, or put a few drops in the bore then put a wad of AI&P Tactical Cleaning patches (paper towels) and push that through the barrel with your "AI&P Tactical Cleaning Rod" ( the wooden dowel).  This will leave some oil in the pores of the barrel for storage. 

Polish the chamber and bore every time you clean the weapon, every time and you will not have extraction issues and will always have a clean high polished barrel.

Tube Extensions:

First we have to assume you removed the detents from you mag tube if you are installing the tube extension on an Express model.  If not, then you have to so go to the how to video "tube extension kit" and follow that.

Here is the biggest install mistakes guys make.   If you have installed you tube and can't get but 4 or 5 rounds in it, you have installed it incorrectly.  The Remington LE tube extension is made to install apart.  Look at the instruction sheet at the parts.   There is a magazine tube coupling, a tube, a bracket, a bracket screw, a follower and a magazine spring.  Screw the mag tube coupling off the tube and lay all the parts out in front of you.

Install your barrel then take the magazine tube coupling and screw that on first.   Install the follower and spring.  Feed the spring down by capturing it with and holding it in place as you work it down.  Place the tube over the spring and bring it down to the coupling and begin to screw it on.  When you get it screwed most of the way on take the heel of you hand and pop the mag tube coupling.  You are doing this to ensure that the spring is not getting caught in the threads.  If you tighten the tube down on the threads the spring will bind and you will not be able to fully load the tube, or, the spring will pop out and you can load the tube but the spring will hand up from time to time.   So, pop the coupling to make sure the spring is not binding and screw the tube down some more.  Repeat this as you tighten the tube down.  

Make sure the barrel bracket is spread so it does not scratch the barrel and slide it on.  You see the grove in the tube and the screw hole of the bracket must be lined up with that grove for the bracket screw to line up with the threaded hole on the other side of the bracket.  The bracket screw simply needs to be snug.

When removing the tube extension it can screw off as one unit.   However, when you first take the bracket screw out make sure the bracket spreads some so you do not scratch the barrel.  You may have to take the screw out and let the bracket breath for a couple minutes to spread.


Yes, I know very simple right.  However, here are some issues that cause problems.  Follow these tips and you don't risk damage to the receiver stud, locking up the receiver because you squirted loc-tite into the receiver stud, stripping your stock bolt or stripping the pad screws.  Yes, those are all mistakes guys make installing stocks. This is for installing wood and synthetic stocks.  Knoxx and Mesa stocks have detailed instructions so follow them.

When removing your old stock you of course first take the recoil pad off.  Use a Phillip’s head screw driver and spray a little Rem Oil on the screw driver so it turns in the pad.  Use a very large flat head to take the stock bolt out.

To install the new stock follow the directions that came with.  Here are some tips that will help.  Also, I always instal stocks with the barrel off the weapon.  This way I can stand the weapon up on the mag tube and let gravity be my friend.

If you had wood stocks on your shotgun there is a "stock bearing plate" between the stock and the receiver.  This is used only for wooden stocks.  You do not need this part for any other stocks but save it. 

Take your new stock bolt and hand screw it into the receiver stud to insure there is no damage to the threads of the stud from removing the old bolt. Now take it out.  Clean the end of the receiver since you won't be back there again unless changing stocks. Match the stock up to the receiver to ensure you have the correct stock before you start to install the stock bolt.  Use a very small drop of blue loc-tite on the threads of the new stock bolt.  DO NOT SQUIRT LOC-TITE IN TO THE RECEIVER STUD.   Stand the weapon up on the mag tube and place the stock over the receiver stud.  Drop the stock bolt in and use your finger to start screwing it in, this prevents you from stripping the bolt and receiver stud.  Once you have it screwed down as far as your fingers will allow, use a larger flat head to tighten the bolt and just as it starts to get tight, stop and make sure the stock is lined up on the receiver correctly.  Now tighten the stock bolt down.   To install the recoil pad use the oil trick on the screw driver again to help in turn in the pad.   DO NOT use a screw gun to install the pad screws as you will FUBAR the stock, use a Phillip’s head screw driver.  Get the first screw almost tight, get the second one almost tight and then make sure the pad is lined up before you tighten them down.