Upgrades for Reliability

Remington 870 Repair and Gunsmithing.
User avatar
Scorpion8
Addict Shotgunner
Posts: 397
Joined: Wed Nov 29, 2017 7:17 pm
Location: SE-AK

Re: Upgrades for Reliability

Post by Scorpion8 » Sun Dec 17, 2017 7:20 pm

Synchronizor wrote:
Sun Dec 17, 2017 4:35 am
Scorpion8 wrote:
Fri Dec 15, 2017 7:32 pm
So, what's next?
Does your gun have the old-style, pre-flex-tab action?
Is there a description of this? Being an 870-newbie, I'm not sure what I am looking for.
Retired USN
NRA Life ; NAHC Life
Pain heals, chicks dig scars.....glory -- lasts forever!

User avatar
Synchronizor
Elite Shotgunner
Posts: 3022
Joined: Fri Dec 28, 2012 8:04 am
Location: The Inland Northwest
Contact:

Re: Upgrades for Reliability

Post by Synchronizor » Mon Dec 18, 2017 2:21 am

Here are some comparison pictures. Click for a larger version. I don't have an old/new image for the fore-end tube assembly, but the differences are all in the action bars. If you have an old-style slide assembly, then you must have an old-style fore-end tube assembly as well, otherwise the gun wouldn't go together.

Image

Image

Image

User avatar
Scorpion8
Addict Shotgunner
Posts: 397
Joined: Wed Nov 29, 2017 7:17 pm
Location: SE-AK

Re: Upgrades for Reliability

Post by Scorpion8 » Wed Dec 20, 2017 1:53 am

I appear to have the "old" style.

Image

Image
Retired USN
NRA Life ; NAHC Life
Pain heals, chicks dig scars.....glory -- lasts forever!

User avatar
Synchronizor
Elite Shotgunner
Posts: 3022
Joined: Fri Dec 28, 2012 8:04 am
Location: The Inland Northwest
Contact:

Re: Upgrades for Reliability

Post by Synchronizor » Wed Dec 20, 2017 2:07 am

Yeah, that's definitely an old-style slide assembly. With your gun being a 1970s model, the other parts are probably pre-flex-tab as well. If you want the most reliability - especially if you might need to reload or top-off your gun under stress - these really should be updated.

Like I said, you can mix old & new action parts, and each new part you add will improve things. The only exception is that if you get a new-style fore-end tube assembly, you need a new-style slide assembly to go with it. Otherwise, you can keep an eye out for sales or good prices on the used market, and update one thing at a time. Ideally you'd want all four eventually (breech bolt, carrier, slide assembly, and fore-end tube assembly), but a new-style bolt, carrier, & slide assembly with an old-style fore-end tube assembly is pretty reliable too. There's just a bit less support between the slide assembly & action bars, and the action won't run quite as smooth since the angles that move the shell latches are more abrupt on the old-style action bars.

User avatar
Scorpion8
Addict Shotgunner
Posts: 397
Joined: Wed Nov 29, 2017 7:17 pm
Location: SE-AK

Re: Upgrades for Reliability

Post by Scorpion8 » Wed Dec 20, 2017 3:04 am

I went ahead and ordered the slide plate assy off MidwayUSA when I ordered the Mossberg choke tubes (see that other thread). The geometry is just a bit different, but as stated it should help. Its from the Marine Magnum, so it should have improved chrome.
Retired USN
NRA Life ; NAHC Life
Pain heals, chicks dig scars.....glory -- lasts forever!

efriedrich
Active Shotgunner
Posts: 95
Joined: Fri Dec 22, 2017 1:53 am

Re: Upgrades for Reliability

Post by efriedrich » Sat Jan 06, 2018 5:41 am

I just did the extractor upgrade and it was quite simple, cant wait to try it. The wimpy mim extractor on the right already looks worn after only a few hundred rounds. The picture does not really do justice to the new extractor, its seems like a much beefier part.
Attachments
IMG-0567.JPG
IMG-0567.JPG (60.85 KiB) Viewed 1376 times
IMG-0563.JPG
IMG-0563.JPG (60.53 KiB) Viewed 1376 times

User avatar
alpha15
Valued Shotgunner
Posts: 106
Joined: Thu Nov 24, 2016 4:06 pm

Re: Upgrades for Reliability

Post by alpha15 » Sat Mar 03, 2018 10:14 am

Jd mcquire sells the flex tab conversion kits on his website.

Here it is
https://tacticalgunsling.com/products/f ... ington-870

Sent from my RCT6303W87DK using Tapatalk




Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest