(2) 870 barrel clamps (mag ext swivel assb)?


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226
March 19, 2006, 01:05 PM
Greetings. I have read that barrel clamps are recommended and can understand the reasons as the mag ext could be bumped / bent and the threads damaged. Not to mention the mag ext is holding the barrel securely in place.

If a sling is used with the sling swivel below the Remington mag clamp, it seems there would be stress placed on the bbl clamp, though this stress could be negligible. If not, would two bbl clamps be in order? If one is good, would 2 be better?


.

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dfariswheel
March 19, 2006, 03:46 PM
Kind of a "belt and suspenders" method.

Depending on WHICH clamp you use, there should be no issues, since most swivels or slings will fail before a good clamp will.

The best clamp is the Remington factory model or the easier to get exact copy made by Uncle Mike's.
http://www.unclemikes.com/adtemplate.asp?invky=9004490&catky=1465723&subcatky1=4548843&subcatky2=2000180

A clamp that may be even better is the Clark model, but it doesn't take a sling swivel.
Hold on to your wallet:
http://www.brownells.com/aspx/ns/store/ProductDetail.aspx?p=5022&title=SHOTGUN+MAGAZINE+BAND

Fred Fuller
March 19, 2006, 03:49 PM
My 870P has the factory two piece extension and the clamp with the sling swivel beneath. It is very sturdily made and locks the barrel and extension together firmly. It provides ample support by itself, I can't see any need for more support than it gives in order to support the magazine extension and support the gun on a sling. I think two clamps would be overkill, but if you're a 'belt and suspenders' sort of person, or are using a really long magazine extension, go for it.

lpl/nc

Delivery McGee
March 19, 2006, 05:28 PM
You'll only be able to use one Remington clamp, as it requires the groove in the mag tube to provide clearance for the screw (and put it in the right place for bayonet mounting). I'm pretty sure the Uncle Mike's copy has the screw moved up a hair so as to not require a groove.

On a related note, would two regular clamps sturdy it up enough to make a bayonet usable, or does it really require the military sleeve clamp? Where can I get a bayonet lug that attaches to the bottom of the Remington factory clamp? :evil:

dfariswheel
March 19, 2006, 07:33 PM
The military found that the factory clamp and bayonet mount just wasn't up to actual use with a bayonet.

For some reason no one has made a simple bayonet lock attachment for shotguns, and no commercial copy of the military Mark 1 has ever been made.

There is a new Mark 1 up for sale on Ebay.....Hold on to your wallet:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7227951944

Delivery McGee
March 19, 2006, 07:54 PM
There is a new Mark 1 up for sale on Ebay.....Hold on to your wallet:
http://cgi.ebay.com/ws/eBayISAPI.dll...tem=7227951944

Eh, it's no more than Remington wants for a new regular mag extension. Still heinous, of course, but not unexpectedly so.

Fred Fuller
March 19, 2006, 09:42 PM
Last one of those I saw get sold on eBay went for $375 IIRC, and was beat- missing screws, front sight, spring etc. (Edited to add: see it on the thread at http://www.thehighroad.org/showthread.php?t=123715 ).

This one is NIB and is a steal for $112 if you like such things. There is a huge collector's market in .mil shotgun stuff.

Could be more than one is available, but don't tell anyone _I_ told you that...
see http://www.jouster.com/cgi-bin/milshotgun/shotgun.pl?read=6452 and read the thread. Could be the eBay offer is just to set a 'market will bear' price for the rest, I dunno. Might be a different deal or this might be the only one he will sell, or the only one he has left, I dunno. You want one here one is, you snooze you loose. But you won't be bidding against me, I have NO desire to put a bayonet on a shotgun- or anything else for that matter. I am WAY too old for such nonsense.

lpl/nc

226
March 19, 2006, 09:51 PM
Seem to recall sometime last year someone was thinking of manufacturing those mag ext w/bayonet lugs.

.

Slater
March 19, 2006, 09:58 PM
If ya gotta have a bayonet mount on a shotgun, the Mossy 590 comes with the bayonet lug and ya also get one of them cool lookin' heat shields to boot.

226
March 20, 2006, 11:29 AM
I don't need a bayonet lug. The only additions I see to my 870P is a sling and a butt cuff shotshell holder.

.

226
March 29, 2006, 01:45 PM
That's right, was not thinking about the mag tube groove.

You'll only be able to use one Remington clamp, as it requires the groove in the mag tube to provide clearance for the screw...
Has anyone seen this model of magazine clamp (pic from www.wilsontactical.com site)?

http://www.wilsontactical.com/guns/Ichi011A_1_3.jpg

...

dfariswheel
March 29, 2006, 02:24 PM
The Remington factory clamp is the best and offers the most support.

For Non-Remington extensions, Uncle Mike's sell an exact copy that will fit any extension:
http://www.unclemikes.com/adtemplate.asp?invky=9004490&catky=1465723&subcatky1=4548843&subcatky2=2000180

Other than the Factory/Uncle Mike's, the Wilson Tactical looks like the best of the standard type clamps.
It looks to be made of thicker steel, and fits the barrel and extension much closer.

By the way, the above referenced military barrel and bayonet attachment that was up for sale, went for $401.55.

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