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#1 2012-01-15 21:00:25

nuker1
Member
Registered: 2011-03-10

Progress on the 930 SPX Urbino Stock

Mitch,
this is by no means a new topic, last post I saw on the progress of the Urbino Stock for the 930 was last November. Where are you in regards to production? Your products are far superior to the other stock replacements for the 930, looking forward to getting the Urbino when it is released.

Thanks

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#2 2012-01-16 07:11:33

mitch
Administrator
From: Costa Mesa USA
Registered: 2007-11-05
Website

Re: Progress on the 930 SPX Urbino Stock

Thanks, but we haven't made any progress since then.  We hope to speak to the Mossberg shotgun product manager at the SHOT Show this week.

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#3 2012-01-30 15:13:10

mitch
Administrator
From: Costa Mesa USA
Registered: 2007-11-05
Website

Re: Progress on the 930 SPX Urbino Stock

Just got off the phone with Mossberg concerning this issue.

They said the recoil spring tube can indeed be swapped in the field.  I wanted to hear what they said before we tried it ourselves.  Here is how far out the Urbino stock the recoil spring tube protrudes:

303.jpg

So we are going to have to shorten it by at least an inch.

We don't have a strap wrench here, so all we could do was take a pair of pliers to the tube (you can see how this will mark up the tube a bit):

305.jpg

The tube threads into a receiver stud.  We aren't sure whether the tube and the receiver stud can be easily separated.  We might have to supply replacements for both.

304.jpg

306.jpg

Mossberg say they will help us with the tube dimensions and spring specifications, so we should be able to start testing a shorter tube (with a factory stock) soon.

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#4 2012-01-31 08:15:48

nuker1
Member
Registered: 2011-03-10

Re: Progress on the 930 SPX Urbino Stock

Awesome news about a possible Urbino Stock for the 930SPX, I'm sure there are plenty of happy Mossberg owners excited for its debut.

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#5 2012-02-03 06:39:23

Exodus5
Member
Registered: 2011-09-06

Re: Progress on the 930 SPX Urbino Stock

It looks like you could just put a deeper recoil pad on the end of it now and fit it.  You'll have to excuse my lack of knowledge on recoil tube lengths for shotguns, but can't you just trim the tube and make up the difference with a different spring?  I'm dying for this on my 930spx.

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#6 2012-02-07 12:09:04

mitch
Administrator
From: Costa Mesa USA
Registered: 2007-11-05
Website

Re: Progress on the 930 SPX Urbino Stock

The principle advantage of the Urbino stock is it is shorter than the factory stock, so putting a longer recoil pad on it doesn't help anyone.

Trimming the tube and installing a different spring might be a solution, but hardly something the average shooter or police armorer is willing to do.  We would have to supply a replacement tube and a replacement spring with the replacement stock.

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#7 2012-04-04 08:54:31

Exodus5
Member
Registered: 2011-09-06

Re: Progress on the 930 SPX Urbino Stock

So does that mean this project has been dropped?  I am still interested in getting a PG stock that isn't that fugly Choate thing.

Last edited by Exodus5 (2012-04-04 08:54:41)

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#8 2012-04-17 09:37:19

mitch
Administrator
From: Costa Mesa USA
Registered: 2007-11-05
Website

Re: Progress on the 930 SPX Urbino Stock

No, the project has not been dropped!  We have worked out the length of the spring we'll need for an Urbino stock, and all we need to do now is rework the factory tube to accommodate the factory spring at a shorter length.  We want to stress test the shotgun with the spring in a more compressed state to see if it has any effect on operation (the boys at Mossberg suggested it might not have any effect).  If it works, we could do the project by supplying a new recoil spring tube, and allow the customer to use the factory spring.

It's on our list of things to do.  This is an active project, but there are a few items in front of it right now.

Stay tuned.

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#9 2012-04-23 15:16:40

Zeusmotorworks
Member
Registered: 2012-04-23

Re: Progress on the 930 SPX Urbino Stock

Mitch,

I've posted in this thread (under my old company email) to remind you of my interest and suggestions regarding the stock length/spring/spring rate, and straight stock vs "pistol" grip for LE use. Again, I hope this moves along and ordered a new SPX today as a test subject for the length of pull modification. This is a great platform that could be greater still if LOP was more in keeping with those of us used to "nose to charging handle".

Last edited by Zeusmotorworks (2012-04-23 17:49:02)

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#10 2012-04-25 08:36:42

mitch
Administrator
From: Costa Mesa USA
Registered: 2007-11-05
Website

Re: Progress on the 930 SPX Urbino Stock

Thanks for the post.  We are accelerating development of the 930 model given the many requests we have been getting lately.

The Urbino stock for the Benelli is selling like hotcakes right now.  It's doing much better than we expected.  I was talking to our sales manager yesterday and I said developing the Urbino stock was probably the best decision we ever made.  We are increasingly eager to support additional platforms with it.

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#11 2012-04-25 10:38:20

Zeusmotorworks
Member
Registered: 2012-04-23

Re: Progress on the 930 SPX Urbino Stock

Ready when you are... I have my next "captive" audience tomorrow, then the 10th of May, then the 23/24 of May back to back!

Last edited by Zeusmotorworks (2012-04-25 10:39:09)

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#12 2012-05-10 13:44:04

Zeusmotorworks
Member
Registered: 2012-04-23

Re: Progress on the 930 SPX Urbino Stock

So yesterday the Wife's REQUESTED Mother's day gift came in (3rd Gen 930 SPX). I ran the shotgun side of training/quals today and put it in the hands of students with nothing more than the proverbial first cleaning... not even a site in. Straight to quals. First up a 120lb female. Response, "I'm calling DAD, I need one of these" after passing the qual. Second up, another female who's not enthused about 12 gauge quals. Response, "...that does not beat me up like the Remingtons" (870s) after passing qual. Both afterward, "...but it needs a shorter stock". Next up, long time veteran. His response, "...that shoots real nice" after passing qual. After being told, someone is working on a shorter stock, some other expletive to the effect a shorter stock would make it the cat's ass. Various other people ran the gun through the day in the monsoon rain with it running like a sewing machine all day. 

So, Mitch, I'm just sayin' when we going to have something to put through the wringer for a shorter stock? Got another class coming up the 22nd (full shotgun class), and another like today on the 24th...

Last edited by Zeusmotorworks (2012-05-10 16:34:33)

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#13 2012-05-10 14:29:02

mitch
Administrator
From: Costa Mesa USA
Registered: 2007-11-05
Website

Re: Progress on the 930 SPX Urbino Stock

The cat's ass, you say?

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#14 2012-05-10 16:14:29

Zeusmotorworks
Member
Registered: 2012-04-23

Re: Progress on the 930 SPX Urbino Stock

LOL! Yep...

Last edited by Zeusmotorworks (2012-05-10 16:29:55)

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#15 2012-05-10 16:25:30

Zeusmotorworks
Member
Registered: 2012-04-23

Re: Progress on the 930 SPX Urbino Stock

Tired ramblings...

Last edited by Zeusmotorworks (2012-05-10 16:30:23)

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#16 2012-05-24 15:29:41

Zeusmotorworks
Member
Registered: 2012-04-23

Re: Progress on the 930 SPX Urbino Stock

Two more classes come and gone... still the resounding theme is "needs a shorter stock"!!!

Had a class Tues and again today...

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#17 2012-07-05 17:52:56

Exodus5
Member
Registered: 2011-09-06

Re: Progress on the 930 SPX Urbino Stock

Hi guys.  Any progress?

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#18 2012-07-10 08:09:55

mitch
Administrator
From: Costa Mesa USA
Registered: 2007-11-05
Website

Re: Progress on the 930 SPX Urbino Stock

Yes, we have made progress!  We finally had a chance to take a modified 930 to the range and test it with a variety of loads.

What we did was drill a new rear spring base hole in the recoil spring tube about 1 3/8 inches from the factory hole.

313.jpg

Then we reassembled the shotgun and took it out for some testing.

As you know, replacing the factory spring in this shorter configuration should increase the spring pressure on the bolt.  So our biggest concern was with bird shot and target loads.  We shot about a hundred rounds through the shotgun on Saturday and had no problems.  That's not a definitive test, but it is a proof of concept.

Now we will cut down the factory recoil spring tube and produce a prototype Urbino stock for the shotgun.  We might even shoot it.  In the meantime, we need to set up manufacturing of custom recoil spring tubes and receiver studs.  The Urbinos stocks for the Mossberg 5930 will cost a bit more than the other models because they will include custom recoil sporing tube hardware.

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#19 2012-07-10 11:31:53

Exodus5
Member
Registered: 2011-09-06

Re: Progress on the 930 SPX Urbino Stock

Great news!

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#20 2012-08-03 10:13:09

mitch
Administrator
From: Costa Mesa USA
Registered: 2007-11-05
Website

Re: Progress on the 930 SPX Urbino Stock

We got the 3D printing rapid prototype in this week:

316.jpg

The next step is to cut down and thread some steel tube stock for a shortened recoil spring tube (we don't want to chop up the factory tube).

The funky texture is part of the 3D printing process.

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#21 2012-08-03 15:20:35

mitch
Administrator
From: Costa Mesa USA
Registered: 2007-11-05
Website

Re: Progress on the 930 SPX Urbino Stock

To make a new recoil spring tube, we took some high-pressure drawn over mandrel welded steel tubing, and cut it down to the required length of 10.66 inches:

317.jpg

Then we used a 5/8"-32 die to cut threads at both ends.

318.jpg

After we did that, we drilled the cross hole for the recoil spring seat.  Once we put everything back together it looked like this:

319.jpg

This weekend we will take it out to the range for some live fire testing.

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#22 2012-08-06 07:15:11

mitch
Administrator
From: Costa Mesa USA
Registered: 2007-11-05
Website

Re: Progress on the 930 SPX Urbino Stock

Took it out to the range on Saturday:

320.jpg

We had a few problems with double feeds.  One of the guys at the range with more experience with Mossbergs said this was not unusual with low brass bird shot.  He said the Mossber 930 is a lot happier with buck and slugs.  We had no problems at all with buck and slugs.

Is this true?  Do Mossberg 930s have issues with low brass shells?

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#23 2012-08-06 07:31:20

Zeusmotorworks
Member
Registered: 2012-04-23

Re: Progress on the 930 SPX Urbino Stock

It seems to be hit or miss with people having issues with low power ammo. It's not even 1st, 2nd, or 3rd generation dependent. My Wife's 3rd Gen seems to cycle everything we have thrown at it from day one. I've heard others not being so fortunate with all three generations. I don't know if it's springs or gas port related since ours has always run fine. Much like the Benellis and FNs, I've heard of few issues when running various LE type loads... to include low recoil.

Last edited by Zeusmotorworks (2012-08-06 07:36:26)

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#24 2012-08-06 07:40:07

Zeusmotorworks
Member
Registered: 2012-04-23

Re: Progress on the 930 SPX Urbino Stock

BTW, I'd LOVE to have that stock without the pistol grip smile

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#25 2012-08-06 08:06:05

mitch
Administrator
From: Costa Mesa USA
Registered: 2007-11-05
Website

Re: Progress on the 930 SPX Urbino Stock

Zeusmotorworks wrote:

BTW, I'd LOVE to have that stock without the pistol grip smile

I assume you saw this?

http://www.mesatactical.com/forum/viewtopic.php?id=1212

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