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Did NPM get Hammer from any ?
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Tankerfrank View Drop Down
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Points: 24 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tankerfrank Quote  Post ReplyReply Direct Link To This Post Topic: Did NPM get Hammer from any ?
    Posted: Sep 27 2023 at 1:18am
I'm wondering if NPM got any Hammer from different vendors in the serial number range 196215x And if so who?
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According to War Baby, NPM received hammers from IBM, Rock Ola, Std Prod. & Underwood in '43.
Glenn
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Points: 51 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Taraw1943 Quote  Post ReplyReply Direct Link To This Post Posted: Sep 29 2023 at 7:17pm
According to Com125, HI type 2 Dogleg hammers used in your serial range.
I really like carbines
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Points: 24 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tankerfrank Quote  Post ReplyReply Direct Link To This Post Posted: Sep 29 2023 at 7:30pm
The Collector guide says that the type 3s were used from 1958,000. In the type 2 started at 1450 00 0 since mine serial number is 1962150 I would think it'd be a Type 3 so I'd like to know which one for sure it is cuz I would like to replace it with the right hammer thank you
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Points: 4496 		Post Options Post Options   Thanks (1) Thanks(1)   Quote New2brass Quote  Post ReplyReply Direct Link To This Post Posted: Sep 29 2023 at 11:17pm
@tanker frank
we previously discussed the Riesch book from the following thread

Originally posted by New2brass New2brass wrote:

U.S. M1 Carbines, Wartime Production…by Craig Riesch, 7th Edition

 

 


However, the sampling of carbines that Mr. Riesch had available was far too small to justify the sweeping generalizations that he made in his Tables (charts), showing readers what parts types and markings are “correct” for the various serial number ranges of carbines.

Carbines were not assembled in strict serial number order and changes in parts types were not made at defined serial numbers. 

And what I found very disappointing, is that - if Mr. Riesch didn’t know the answer to something, he apparently guessed. His chart on oiler markings is an example of guesswork to fill in what he didn’t know.

   


to give a few quick examples, IP worked on both serial blocks simultaneously. SG took over and disassembled and gauged all the parts and reassembled.  The CCNLs show that barrel date is more important than serial number.
Underwood had 4 assigned serial number blocks and they did not do them consecutively, further they worked on the 2 million block partially, then the 4 mill, then 4, 6, and rest of 2 mil block at the end.
NPM also mixed up their blocks a bit.
Sometimes it was due to subcontracted receivers, other times for what ever reason.

you got good advise above. To add to it, the most common barrels in your serial number block are Underwood  dated 7-43 to 9-43 or a Marlin undated.

Hammers in use were the T2 dogleg with HI, HN, H in shield and a N.
About November 1943 the straight hammers showed up in NPM production and generally marked HN or HI.

If you have a 9-43 barrel date then it is conceivable it was assembled in November. You would have to do the math as yours is 20,000 to the end of that block and they went to the 4.4 range next, skipping the 4.0 range.
has a type one
Checking a Carbine of the month, NPM 1937949 had a 8-43 barrel and a T2 NH hammer.
NPM 4426--- had a 9-43 barrel and a type 2 HI hammer
41498-- had a Buffalo Arms 11-43 barrel and had a t3 straight hammer marked HI.

Member JackP has been recording serial vs barrel dates which may also be of some help to you o you can see if there are closer serial numbers and what barrels have been observed. 


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Tankerfrank View Drop Down
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Thank you  new2brass
I will check tomorrow what my Barrel date is to see a closer view of the Hammers. But see these are things that I never knew. I know my carbine will never be like it was when it came from a factory but I would like to make it correct after the fact. And then on my data sheet I always put what part was originally there and what part I replaced that way there to new owner knows that I'm not trying to hide anything but I'm not selling them I used to be heavy into carbines years ago. But after a divorce hit a cell wall officially have a few now like to keep building. The big mistake was years ago I found a Barracks rack for M1 carbines it was almost like new. So my goal is to eventually fill it all with m1s. But they are starting to get cost prohibited
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Points: 24 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tankerfrank Quote  Post ReplyReply Direct Link To This Post Posted: Sep 30 2023 at 1:17pm
okay this morning I looked at my carbine and like I said the serial numbers 1962150 and the barrel date is 9 of 43 Underwood so I guess I could even have a dog leg style hammer on my carbide am I correct. If so that kind of sucks cuz those are expensive. Anyway thank you
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Points: 1646 		Post Options Post Options   Thanks (0) Thanks(0)   Quote painter777 Quote  Post ReplyReply Direct Link To This Post Posted: Sep 30 2023 at 5:56pm
Can you tell if the Hammer Strikes on your current (hopefully original) Trigger Housing are from a Dogleg or Straight Hammer?

Ch-P777
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I'll look but I'm not sure it's original trigger housing I didn't replace it but 80 years of going between different people who
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Sometimes you'll find a trigger housing that shows indents from use of both a Dog leg and Straight hammers being used. The Dog leg leaves a indent on the left side of the top of the Trigger housing rail farther forward than the Straight hammer. The advantage of the Straight hammer was the lighter / easier trigger pull. I have a picture here somewhere showing the indents, but I assume you get the idea. Easy swap in the field. The Straight hammer used a 26-1/2 coil spring and the Dog leg used a 22 coil spring.

If your NPM is far from original I'd take in to account that by the end on 1943 most all hammers were now Straight. Having a 9-43 barrel your born on date could be as late as early December 43~. To me close enough to go with a Straight Hammer. Seems when your looking for a particular part / maker you can't find it. If your not looking you'll be tripping over them.

Question: What Hammer is in it now?

Ch-P777
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Points: 24 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tankerfrank Quote  Post ReplyReply Direct Link To This Post Posted: Oct 01 2023 at 8:46am
It has a IMB Hammer now.
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