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The first Mauser B series .22 rifles and the "Grooved" ES 340B

mauser22

Well-known member
As for pinning down any change in design features, I have never seen an instance where there was a clean break in the serial number range. There is always some overlap. Many collectors attribute this to the "bottom of the bin" theory, which makes sense. As a component went through the process up to serial numbering later configuration parts likely were placed in the pile and some new configuration components were completed prior to the previous version. Also as production caught up with demand parts were shelved until needed to meet orders. On the centerfire sporters for example, receivers for less popular or more expensive variations laid in inventory for decades before being pulled, serial numbered and built into rifles.
 

Absolut

Senior Member
A lot of Mauser .22 experts in here, I hope you can help me with my two Mauser .22 rifles. I had to take them among a whole estate and never paid much attention to them, so hope to learn more on them. A friend told me what he thought the model designations were, can someone confirm if they are correct?

First one is a single shot rifle with a longer and heavy barrel which I've been told is a ES430B. It still has the Mauser logo on the stock, the metal buttplate has the same Mauser logo on it. I originally took the 459 on the barrel for the proof date, so April (19)59 (which doesn't really fit with the pre war proof, I know), but I've been told this is incorrect. What do they mean then? Also found a stamp on the barrel at the front, shown in the last picture.
 

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Absolut

Senior Member
Second is what I've been told a MM410B rifle, multi shot with a detachable Mauser marked magazine. This one also has the Mauser logo on the (bakelite?) buttplate. Stock has additional checkering in the grip area, is this original factory? Mauser logo in the stock is stamped as yesterday.

When were these rifles made approx.?
 

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mauser22

Well-known member
A lot of Mauser .22 experts in here, I hope you can help me with my two Mauser .22 rifles. I had to take them among a whole estate and never paid much attention to them, so hope to learn more on them. A friend told me what he thought the model designations were, can someone confirm if they are correct?

First one is a single shot rifle with a longer and heavy barrel which I've been told is a ES430B. It still has the Mauser logo on the stock, the metal buttplate has the same Mauser logo on it. I originally took the 459 on the barrel for the proof date, so April (19)59 (which doesn't really fit with the pre war proof, I know), but I've been told this is incorrect. What do they mean then? Also found a stamp on the barrel at the front, shown in the last picture.
The first one is an ES340B.

The "459" refers to the bore not the proof date.

The second is an MM410B
 

albmarktplaats

Active member
Hello Jim,

Good that I found this topic on the K98k forum. I just posted some info on this ES340B rifle with grooved barrel on RFC forum.
I also have a rifle like this in my collection. See pictures. It's a nice example that I found in Germany this year.
This month I will take it apart for cleaning and further research. You can add the serial number in your charts.
If I found strange things I will let you know. It's a very nice rifle and I'm curious how it shoots after all those years.

You already got more info on the K letter? I also asked a Dutch Mauser pistol collector if he knows something about this K letter.

Enjoy collecting this fine rifles!

Alb.
 

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eurydice

Junior Member
And just a thought on the MS420N's with same grooved barrel, those would have been made within weeks of the first B series guns and perhaps, those barrels were left overs used up on the first ES340B's??? Makes sense doesn't it. I was not aware of those and thanks for sharing that.
mauser22,
Today, I had a closer look to the "grooved barrel" MS420N. I measured the barrel length, from the action to the muzzle and got 664 (sixty four) mils; I measured as well an ES350B and found 654 (fifty four) mils; got the same value on the "grooved barrel" ES340B. The B serie's barrel lenght given by mauser is 680mm (including ±25mm threated inserted into the action - the measurements, that I made, make sense). My opinion : "N" serie's grooved barrel is neither a "un-numbered" ES350B one nor a ES350N one (see below)
I have 3 of the grooved models, an es340n, an ms420n and an es340b of which you have the number listed. The sights look identical til you look at the method of attachment. The “n” models sights are slid on from the rear of the receiver , both the attachment rails are solid and continuous. The es340b sight is placed on its rail using the cutouts in the rail, its sight has to have cutouts that corespond to these cutouts. The “b” sight can be used on the “n” models but not vice versa. ( can be slight variations in the tolerances of course)

The barrels on my “n” models are the heavier profiles of the 350n
oldwing,
I also measured (from the action to the muzzle) a ES350N (rotate safety) barrel and got 634mils; if the profile looks the same the lenghtes are different . Could you please either confirm or infirm my measurements by measuring your ES340N, MS420N and ES340B grooved barrels lengthes

mauser 22,
in your archive, do you have any evidence that, sometimes, Mauser company did outsourced its barrels?

Kind regards
 

oldwing

Member
eurydice, I measured the barrels of my 3 grooved barrel variants along with a typical ES350B and a ES340B , The measurements are shown in the photo. Simply used a tape measure and measured from the action to the crown. That is interesting that your ES350N has a shorter barrel. Edit.. I just measured an ES340N and it has about the same shorter measurement as your ES350n . Your opinion that these are not simply un-numbered ES350N barrels seems to be valid .at leasB69C5C47-5727-4D7A-923F-832840D24342.jpegE8885951-F322-4C6D-94CB-819D8433CB71.jpeg
 
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mauser22

Well-known member
I have seen no evidence that Mauser out sourced barrels for .22 models.

Only in the case of the KKW have I encountered any evidence that Mauser MAY HAVE out sourced any .22 components. In fact they planned to at the time the agreement on co-production of the KKW with BSW/Walther and Erma was done. Whether or not they actually did is uncertain.

I would not rule out the possibility that DSM bands and butt plates were out sourced.
 

eurydice

Junior Member
eurydice, I measured the barrels of my 3 grooved barrel variants along with a typical ES350B and a ES340B , The measurements are shown in the photo. Simply used a tape measure and measured from the action to the crown. That is interesting that your ES350N has a shorter barrel. Edit.. I just measured an ES340N and it has about the same shorter measurement as your ES350n . Your opinion that these are not simply un-numbered ES350N barrels seems to be valid .at leasView attachment 308254
Thanks,
I measured the "Un-grooved" barrel length of my MS420N : 634mm

Edit : This "Un-grooved" MS420N has the lowest s/n104xxx I recorded for MS420N. It could be interesting to have the barrel length of a "Un-grooved" MS420N in the 11xxxx s/n range.

Above grooved MS420N
DSC_2589_comp.jpg
 
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oldwing

Member
Eurydice, yes, my es340n grooved barrel has that same triggerguard. It also has a smooth trigger where my ms420n grooved has a grooved trigger. If i remember correctly Jon Speed shows a similar es340n in a photo in his book but did not elaborate on it.

as a side note of this rifle, the Mauser logo on has a gold colored decal or such covering it. I bought it as such and never tried to remove it. It seems the stamp is intact under the cover.
 

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