Magtube Extension Issue on 870

[Mazin]

Seeing how I have always wanted to build a shorty house gun I figured now would be a good time to pick up that 870. So went out to Sportsmans and got a 18.5" 870 for $250 and was pleased since I thought the price was good and even got one that had been un-molested!

Get her home and not a scratch on her (till I racked the pump a few times), Rems coat sucks the magtube started scratching up quick, don't really care because I'm going to dura-coat her. In any case I have over the last week made my orders and have been slowly test fitting the parts and other than a new pistol grip coming in the mail I have her done.

So I go to load up the scattergun tech (aka Wilson Combat) magtube extension and wha???? I can only load 4 roounds. So I think that maybe the spring is crimped so I take it off and look, its fine. So looking at the mag tube I notice 2 little detents in the tube to keep the folloer in...SOB so my question is...

Can I drill it out or grind it without damaging the integrity of the tube or does anyone else have any consructive ideas?

I have had a 870 a long time ago and never had this so is this a new generation thing or what, anyone else have this issue?

[hammer03]

In the same boat. According to Internet research (which is never wrong, right?) the 870 express, at least with newer models, has the two nubs you saw. They can be removed a few different ways. First hit on google has a DIY: http://www.shotgunworld.com/bbs/view...p?f=55&t=53267


Still trying to figure out how I want to do it.

[Scanker19]

Brownells makes a tool to get "dents" out of tubes. I belive they started doing this in 80s when they switched to the new spring retainer.

[Daniel_187]

I filed mine down with a half round file go slow

[BPTactical]

Seeing how I have always wanted to build a shorty house gun I figured now would be a good time to pick up that 870. So went out to Sportsmans and got a 18.5" 870 for $250 and was pleased since I thought the price was good and even got one that had been un-molested!

Get her home and not a scratch on her (till I racked the pump a few times), Rems coat sucks the magtube started scratching up quick, don't really care because I'm going to dura-coat her. In any case I have over the last week made my orders and have been slowly test fitting the parts and other than a new pistol grip coming in the mail I have her done.

So I go to load up the scattergun tech (aka Wilson Combat) magtube extension and wha???? I can only load 4 roounds. So I think that maybe the spring is crimped so I take it off and look, its fine. So looking at the mag tube I notice 2 little detents in the tube to keep the folloer in...SOB so my question is...

Can I drill it out or grind it without damaging the integrity of the tube or does anyone else have any consructive ideas?

I have had a 870 a long time ago and never had this so is this a new generation thing or what, anyone else have this issue?

Nope-common issue-Remmys have "dimples" that need to be removed.
A bunch of ways to skin a cat here-how are you with a round file and getting your knuckles bloody. Brake cylinder hone will do it but it is slow and you can "Bell" the magtube.
Or you can bring it over and I can clean them out for you.

[Not_A_Llama]

I went looking through my socket wrench set for one that fit perfectly - used it to pound out the dimples. Use oil. Pretty standard operation.

[Mazin]

Damn your logic Bp. You know I'm too damn impatient than that. I saw the $75 brownells tool and when I was done checking my empty wallet I grabbed the socket idea of of the earlier post and gave a stab at it.

Worked ok but my buddy has my punches with him so I said f*** it and broke out the dremmel and used a small pointed grinding wheel and ten minutes later the only dimples in my garage were the ones on my ass. Did a polish wheel on the inner tube as well. Cycled it and by damn my shotty has a 7 2.75" capacity. Woohoo!!!!!

Don't worry Bp I still have my co workers rem that needs sights as well as mine (just haven't picked out the ghost rings I want), also I think I want to port mine as well.

[TriggerHappy]

Take it to Rob over at Bowers, he did mine. He does and great job and is very reasonable.

[Irving]

Just send it to a body shop that does paintless dent repair.

[Marine24]

This is an old thread, but figured I'd add this link. Video is the procedure to drill out the detents.

http://www.aiptactical.com/How-To_Videos.html