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combatshotgun

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Reply with quote  #1 
OK you old members remember this but I just dealt with another one so bringing it up again for you new guys.

This applies to the Wingmaster and Police barrels so even if you have an Express but have put a Police barrel on it, and I have sold thousands to guys who did, this applies.

On the barrel ring is a detent plunger and that needs a drop of oil from time to time.  If you don't then the spring behind that plunger rust away and special tools are needed.

I have removed plungers with nothing behind them but rust, no spring just rust.

So, if your barrel has a detent plunger to retain the magazine cap or magazine tube coupling for the Extension here is what you do.

Put a drop of oil and use something to push the plunger in and out.  Repeat this again.   Wipe off the excess as you may have flushed water out of there.

If the plunger goes in and does not spring out, you are to late, the spring has deteriorated.   You can get the tools at Brownells but will all their stuff you are going to pay dearly for your neglect.

I hope this helps some of you guys as I hate to see any 870 neglected even if they are not mine.

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bodybuilding123

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Reply with quote  #2 
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bodybuilding123

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Reply with quote  #3 
Thank you, but I do not understand what the "plunger" is- Are you talking about the follower?
And I am confused exactly what you mean in this following statement- ( sorry for my density)
So, if your barrel has a detent plunger to retain the magazine cap or magazine tube coupling for the Extension here is what you do-?
I can visualize my magazine cap and/or magazine tube coupling for the extension- it is the detent plunger that you lose me- sorry
maybe a little image or drawing would help me to understand. I have the Remington 870 Police Max.
Thanks, again
Gene
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combatshotgun

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Reply with quote  #4 
On Wingmaster barrels and Police barrel your magazine cap is held in place by a small plunger in the barrel ring.  Look at the front of your barrel ring and you will see it.   Express barrels do not have that device as the magazine cap is held in place by and internal device that acts as magazine spring retainer and magazine cap retainer.

That plunger is staked into a hole in the barrel ring.  Behind the plunger is a very small spring and if not oiled it will rust away.  You plunger will no longer engage the magazine cap and it will loosen causing the barrel to move forward and the gun will not lock into battery.

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FlyBoyTim

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Reply with quote  #5 
This new member thanks you JD, I just finished with my Wingmaster. You’re the man... 👍👍👍
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D.J. north woods

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Reply with quote  #6 
And don't forget the safety.
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RedGoat

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Reply with quote  #7 
JD, thanks for this important tip! I’d not thought about this before, but it seems obvious now that you’ve pointed it out.

That little cavity which holds the spring and detention, in conjunction with the “staking” to hold it all in place, operates much like the chamber of a pump, only it has no outlet. Once moisture gets into the chamber, it remains trapped and hidden, doing it’s nasty work on the spring and detent.

I’m wondering: if a given barrel has never had oil applied in this location but the detent spring still shows signs of life, would it be worthwhile to get a little WD40 in there first, then follow up with some oil?
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combatshotgun

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Reply with quote  #8 
I would use a heat gun or your wife's hair dryer on it.  Once you have it warm enough to get rid of the moisture then a drop of oil and work the plunger in and out.
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JD McGuire, Owner
AI&P Tactical, LLC
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http://www.tacticalgunslings.com
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RedGoat

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Reply with quote  #9 
Another excellent suggestion, JD! Drive out any accumulated moisture with heat, add oil. Simple and logical. The old farm boy in me still wants to find uses for WD40, but I understand that it’s uses on and around firearms can be problematic.
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combatshotgun

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Reply with quote  #10 
I have never used it on firearms.  Some say it gums up over time and others have no problem.   Probably one of those 50/50 questions if you posed it.   I just stick with what I know.
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JD McGuire, Owner
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D.J. north woods

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Reply with quote  #11 
After reading this, I bought a 1/16 nail set to move the plunger. Works as is but you might want to shorten the tip just a bit.  Cost $3.00 and change.


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