SPR 453 magazine extension?
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Author:  huntmich [ Sun Oct 10, 2010 1:51 pm ]
Post subject:  SPR 453 magazine extension?

anyone know where to get one? I've been looking around the internet the last few days with no luck

Author:  ABaikal [ Mon Nov 01, 2010 8:04 am ]
Post subject:  Re: SPR 453 magazine extension?

From a previous post by someone:

The Tac-star 870/1100 mag extension worked on mine. You will have to use a spacer because the threaded section on the extension isnt long enough to cover all of the threads and the handguard will rattle.

The extension for anothe type of shotgun also works (according to another guy here), can't remember make. I think it's a 850??
GunCity in newzealand used to supply but I don't know if they supply anymore.(100 Euro)

There should be a stickey as this question is asked alot.


Read more: viewtopic.php?f=83&t=132803#ixzz142FJZJwH

Author:  towest [ Tue Nov 02, 2010 5:21 pm ]
Post subject:  Re: SPR 453 magazine extension?

I get 2 shels extension from Russia. It is has excentric hole and magazine follover couldnt go trought. So I am loading 5 shels, same as before, without extension. A bit of the disapointment.

Author:  kingjoey [ Tue May 08, 2012 4:11 am ]
Post subject:  Re: SPR 453 magazine extension?

Its the same thread as the Rem870. If you use a factory Rem870 extension you can thread the nut on all the way then thread the tube in (doesn't hurt to Loctite it together) and have a nice tight fit

Author:  ABaikal [ Sun Jul 28, 2013 5:31 pm ]
Post subject:  Re: SPR 453 magazine extension?

Another thread discussing this issue:


Author:  53vortec [ Wed Jan 15, 2014 10:11 am ]
Post subject:  Re: SPR 453 magazine extension?

I recently picked up a 24" MP153 and am on the hunt for an extension myself. According to the paperwork mine is a 2011 production gun.

I've contacted all the magazine extension companies I could locate online, none confirm any of of their products functioning with the MP153. ATI has discontinued their polymer 870 extension that is often reported to work.

Tried fitting magazine caps from an 870, BPS, and Ithaca 37. The 870 cap only made it one turn before binding, the latter two wouldn't even start on the threads. Some posts online are claiming that the Nordic VersaMax extension worked, but as I understand the VersaMax has the same thread pitch as the 870 so I am assume this would not work for me.

Found a post on a foreign website reporting a Beretta Xtrema extension worked. Nordic's Xtrema extension is listed as also being compatible with the Nova, Super Nova, and CZ 712. Choate lists theirs as also compatible with the Franchi 912, 612 and Fabarm FP6. I am hoping to locate one of these shotgun locally and see if the magazine caps interchange. Else wise I will probably order one of the Nordic extensions and see if it will work. Will post results regardless.

If anyone happens to own an MP153 and one of the shotguns I listed in the paragraph above could you advise if the magazine tube caps will interchange?

Author:  BartShotgun [ Sat Mar 15, 2014 4:09 pm ]
Post subject:  Re: SPR 453 magazine extension?

Magazine extensions available here: ... egory_id=2

Greece is the country if thats any good. Don't know if they export.


Author:  riot-gun [ Wed Apr 16, 2014 12:25 pm ]
Post subject:  Re: SPR 453 magazine extension?

The reason 870/1100 caps bind is because the OD of the Russian tube is slightly larger, like KJ said the thread pitch is the same, turn the OD of the threaded portion of your mag tube down .003-.010 (depending on the gun) then shorten the threaded portion about 1/8" and the nordic versamax extension will work fine, and your standard magazine cap will still thread on fine if you want to go back to a 5 shot. You'll either need to pull the tube and use a lathe or (like me) VERY carefully turn it down on a belt sander with a fine grit belt. Forget trying to use a file, the tubes are very hard stainless steel and are VERY resistant. But you must shorten the mag tube to just before the spring retainer holes or you'll have to jury rig a spacer so everything tightens down appropriately. These modifications are permanent obviously but does not prevent you from returning it to a 5 shot if you so choose.

Author:  kcobean [ Mon Jan 12, 2015 3:01 pm ]
Post subject:  Re: SPR 453 magazine extension?

Watch this video. He says he uses a Nordic Components tube for a VersaMax.

Author:  P14.45 [ Wed Jan 31, 2018 8:14 pm ]
Post subject:  Re: SPR 453 magazine extension?

Hi to all {hs#

I finally found a + 4 extension for my Baikal MP 153 or SPR 453 that' the same :

look here

now my shotgun is 10 +1 round with the PSL 4 extension it fits perfectly

a Remington 1100/11/87 barrel magazine clamp is useful, works and looks better

don' t buy the follower: it doesn't work use the original after polishing
don't buy the spring :a nordic cut to fit spring to cut is more cheaper

I hope this may enjoy all of us who like a more tactical shotgun

Author:  Afzaal [ Wed Oct 10, 2018 9:41 am ]
Post subject:  Re: SPR 453 magazine extension?
Provides everything but again its Russian based web.
Look up your country laws.

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