870 Magazine Tube Dimple Removal

Dorian Gray

Dorian Gray

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I'm sure this has been asked on here before but I must admit, I don't frequent this part of the forum all that often and the search feature on CGN leaves a bit to be desired...:yingyang:

Anyway, I've practiced my google-fu a bit and have seen a number of different methods to do this.

In your opinion, what is the best way to get this job done? I don't really want to drill holes in the mag tube, or send it to a gunsmith if I don't have to.

Thanks in advance for any help you guys can give me.
 
I used a cheap SKS front sight adjuster and some sockets and other various bits to push out the tube dent on a Norinco..... what ever works. Drilling is probably the easiest.


Here are some pictures from the net.... from this guy's tutorial,

http://www.rem870.com/2010/01/17/removing-dimples-on-remington-870-magazine-tube/

All_Required_Items1.jpg
 
Kman303 said:
I found a socket that fit the tube, tapped it in and tapped the dimple out, I didn't want a hole in the tube!
Click to expand...

This is sort of what I'm leaning towards. A couple of holes can let a lot of crap into the tube. Doesn't seem like the best idea since I'm setting this gun up to be a "defense" type of shotgun. This thing has to work every single time.
 
I ground my dimples out with a dremel.

But I wouldn't recommend it for anyone not highly skilled with one. You can burn through the tube very easily.
 
I ground mine with a Dremel too.

Plug the tube with a rag so the shavings/dust don't fall down the length of the tube towards the action.
 
I'm digging up this thread with a question for you guys that removed the dimples using the socket method.

Did you secure the mag tube in a bench vise or did you simply hammer/tap down on it, with the butt on the floor. (...just curious; I have a brand new 870 that I don't want to f'up.)

thanks
 
I tried the socket method first and almost didn't get the socket back out. Make sure you have the right size.
 
If you use the socket method, use lots of oil or start with a smaller one first and work up. There was a thread just a couple of weeks ago where the guy got it stuck and twisted the hell out of the mag tube and had to replace the entire tube
 
dogzilla said:
If you use the socket method, use lots of oil or start with a smaller one first and work up. There was a thread just a couple of weeks ago where the guy got it stuck and twisted the hell out of the mag tube and had to replace the entire tube
Click to expand...

Geez! Thars crazy thanks for the heads up in think I'll tale the Dremel route when u do mine
 
I used a dremel tool and a grinding bit. Use a little cold blue after to touch things up and your good to go!
 
If you use a Dremel, shove a small rag in the mag tube to avoid shavings and dust from falling in your action. Not too far down, just enough so thstbyou're able to pull it out the end when the work is done.
 
This nonsense of having to remove the dimples in order put on a mag extension is why I ultimately bought an 18.5" Mossberg 590A1 instead.

I wanted an 870 but decided it wasn't worth the effort to "fix" a new shotgun.
 
Not sure if it would work on a mag tube, but Ive done this a dozen times to get dents out of a dirt bike exhaust. Plug one end so its airtight, heat it up gently with torch until its red hot the slowly add compressed air into the open end. As the pressure increases, the dent will pop right out. The heat doesn't hurt the muffler, but not sure what it will do to gun blueing. If you decide to try it, id be curious to how how it worked.
 
Milson Wilson said:
This nonsense of having to remove the dimples in order put on a mag extension is why I ultimately bought an 18.5" Mossberg 590A1 instead.

I wanted an 870 but decided it wasn't worth the effort to "fix" a new shotgun.
Click to expand...

Dimple removal is only required for new production 4+1 870s.

Older 870s do not have dimples are are extremely easy to find.

Remington also offers a number of 6+1 shotgun models without dimples and extensions already installed.
 
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