Remington Magazine Extension
Remington Magazine Extension

Remington 870 or any other shotgun is very powerful weapon but it has very limited magazine capacity. Standard Remington 870 shotgun has just 4+1 capacity. That is why one of the first upgrades of home defense or tactical shotgun is a magazime extension.

There are many different extensions on the market today:

1. TacStar Magazine Extension
2. Choate Magazine Extension
3. Nordic Components Magazine Tube Extension
4. Original Remington Magazine Extension
5. Scattergun Technology Magazine Extension
6. Vang Comp Systems Magazine Extension

You can see detailed post about different magazine extensions here: Magazine Extensions for Remington 870 Shotgun (Nordic Components, Choate, TacStar, Remington, ATI)

Installation on older Remington 870 shotguns is very easy, you just remove magazine cap, spring retainer, old spring and install new spring and magazine extension. But newer Remington 870 shotguns have two dimples in the magazine tube which hold new spring retainer in place. You need to remove dimples in magazine tube in order to install magazine extension.

Instructions on installation of the magazine extension on Remington 870 Express

If you don’t remove dimples in magazine tube, follower will stuck. So, first of all, remove two dimples inside of the magazine tube. There are several ways to remove dimples:
1. Drill them out.
2. Polish dimples using Dremel.
3. Press dimples out using socket.

Each method has its advantages and disadvantages. First two methods are quick but will leave two holes in magazine tube. Third method won’t live holes but it is slow and and socket can stuck inside the magazine tube.

Three detailed articles which show how to remove dimples inside magazine tube:

1. Drilling out Dimples (Tabs) to install Magazine Extension on Remington 870
2. How to Remove Dimples From Remington 870 Express Magazine Tube
3. Removing Dimples on Remington 870 Magazine Tube

When dimples in magazine tube of Remington 870 are removed, you can install magazine extensions without any problems.

It is recommended to replace standard follower with enhanced one. Related post: Remington 870 Followers Overview (Vang Comp Systems, CDM Gear, SBE Precision, GG&G, S&J Hardware, Scattergun Technologies, Choate, Nordic)


  1. I’ve tried removing the dimples in the magazine tube by using Dremel and it wasn’t working as well as I thought it would. I’ve then tried to press the dimples using the socket and they popped out pretty easily. Then I’ve installed magazine extensions from Vang Comp Systems because they are my favorite.

  2. Sally Benchwood

    I wonder why on newer Remington 870 models the manufacturer has included those two dimples in the magazine tube. Wasn’t it better before?

    Now if you want to install a magazine extension you need to somehow remove these dimples which can be quite troublesome. My husband has a newer model of Remington 870 and he says he may need to drill those dimples out but from what I’ve read on your site that can create other problems.

  3. I have had trouble removing the dimples from the magazine tube in the past. I will be sure to try this technique. Do you have any tips on attaching a suppressor?

    1. Not sure if it’s possible to attach a suppressor to a shotgun. I’ve seen shotgun with suppressor only in No Country for Old Men movie.

  4. Noah Jones

    I used the “drilling method” with my Remington 870 and it was a grave mistake! The weapon became weak and I eventually had to replace it with a new one. If you use this method you are risking it! I know that some people are fine with it, but I paid a big price for doing this so beware.

  5. Hell0,
    I have an old 870 wingmaster with the vari-weight steel plug in the mag tube. To add a +1 extension do I just remove the weight completely? I have no retainer or plastic piece. How do I do this? Does the new spring ride against the back of the new extension? Or do I need the plastic and spring retainer to hold it properly? Thanks!!

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