870 Express slide not locking

Remington 870 Repair and Gunsmithing.
Jacobf0303
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870 Express slide not locking

Post by Jacobf0303 » Wed Dec 26, 2018 4:20 pm

Hi there,

I got a Remington 870 Express 20 Gauge for Christmas, I took it out of the box and put on the barrel and everything seemed to work fine, I wanted to learn how to disassemble the gun for cleaning so I removed the bolt and forend and put it back together, no issues and since then when the hammer is cocked the slide doesn't lock properly, when you twist the slide to the left the lock fails and the action opens about 1/4 of the way than gets stuck, once it got stuck so bad I had to but the gun between my feet and grab the forend with both hands just to get it to close. This is a brand new gun and I haven't even fired a single round out of it, if I can't fix it myself I'll have to bring it back to the store, which is an hour and a half away.

Sorry for rambling,
Thanks!

Jacob.

here's a video of my issue: https://www.youtube.com/watch?v=vJqwR8gJZew

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TexasArmor84
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Re: 870 Express slide not locking

Post by TexasArmor84 » Wed Dec 26, 2018 7:13 pm

Sorry about the issue you are having. First make sure the gun is safe with no ammunition in it and engage the safety on. Remove the trigger lock and see if it still does it without the lock.


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Jacobf0303
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Re: 870 Express slide not locking

Post by Jacobf0303 » Wed Dec 26, 2018 7:18 pm

Hi again,
through the experimenting I've done I've found that the issue goes away when the trigger group is out, as well as when I remove the bolt or barrel. which puzzles me why the issue goes away when the barrel is removed

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TexasArmor84
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Re: 870 Express slide not locking

Post by TexasArmor84 » Wed Dec 26, 2018 7:25 pm

Read the owners manual on disassembly and reassembly. Sound like something simple that not lining up.


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Jacobf0303
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Re: 870 Express slide not locking

Post by Jacobf0303 » Wed Dec 26, 2018 7:38 pm

unfortunately, the owner's manual is very vague, though I did follow the steps, no improvement and I've also watched just about every youtube video on reassembly and still no improvement.

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TexasArmor84
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Re: 870 Express slide not locking

Post by TexasArmor84 » Wed Dec 26, 2018 7:49 pm

If it was working fine before you took it apart then make sure the forend action bars are lined up right with the flex tab and bolt seems like that is your issue.


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Jacobf0303
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Re: 870 Express slide not locking

Post by Jacobf0303 » Wed Dec 26, 2018 7:55 pm

Hi again,
I've already tried that, and while I think it worked before I took it apart, I can't be sure as I didn't test it very much before disassembly, and I know that everything is lined up properly, I've probably reassembled the gun over 30 times today and yesterday and everything seems to line up, but nothing fixes my issue.

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TexasArmor84
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Re: 870 Express slide not locking

Post by TexasArmor84 » Wed Dec 26, 2018 8:02 pm

Then yes I would try and take it back from where you bought for an exchange for the same gun or get with a gunsmith or someone that is experience with firearms to look at it for you. Sorry it’s difficult over a conversation and personally not looking at it myself


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USMA-1982
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Re: 870 Express slide not locking

Post by USMA-1982 » Wed Dec 26, 2018 8:58 pm

Did you pull the trigger while the gun was disassembled or the bolt was out of the gun? If so, check to make sure the left connector lays on top of the action bar lock as shown in picture 1, and not underneath as shown in picture 2.

Picture 1
Image


Picture 2
Image

Jacobf0303
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Re: 870 Express slide not locking

Post by Jacobf0303 » Wed Dec 26, 2018 9:01 pm

USMA-1982 wrote:
Wed Dec 26, 2018 8:58 pm
Did you pull the trigger while the gun was disassembled or the bolt was out of the gun? If so, check to make sure the left connector lays on top of the action bar lock as shown in picture 1, and not underneath as shown in picture 2.

Picture 1
Image


Picture 2
Image
Hi there,
Mine looks like the first image.

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