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I recently aquired a '57 336a in 35 rem and I set it up with a leupold M8 fixed 4x. I used a nice set of bausch and lomb 2 piece rings that I got off of ebay but one of the last things I need to do is add a hammer extension to it. I am having a hard time finding a store with the pre '83 hammer exrensions in stock. Anyone know why or does anyone have one they want to part with? I also need to remove the old sling loop from the front stud and then drill it out so I can add a detachable sling in the future. Then it will be ready to go. Thanks for any help.
 

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Just for information, and it may not apply for your rifle, but I just got a 1957 336SC in 35 Remington also. It has what I think is called the "old style" hammer, and the Uncle Mikes hammer extension that is advertised to fit "1957-1982 Marlin lever actions" (#2452-0) does not fit on my hammer. My rifle has a 4 digit serial number, so maybe it is a very early 1957. I modified one of these 2452's to fit. Not sure if you have the same hammer. I am wondering if, sometime in 1957, Marlin started using a hammer that had the sides milled to accept a hammer spur. There may be one that is currently manufactured to fit my style hammer, but I couldn't find it. It was a good project while it rained all day.

Hopefully the Uncle Mike's #2452-0 will fit your hammer. As of 3 days ago Brownell's had them in stock.
 

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Got mine through Brownell's on line. Just go to Brownell's.com and see if they have them in stock yet.
358 win
 

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The Uncle Mike's hammer extension in the above link has always fit on any pre-safety Marlin, that I mounted a scope on, that I've tried it on.
 

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Bedrock said:
Just for information, and it may not apply for your rifle, but I just got a 1957 336SC in 35 Remington also. It has what I think is called the "old style" hammer, and the Uncle Mikes hammer extension that is advertised to fit "1957-1982 Marlin lever actions" (#2452-0) does not fit on my hammer. My rifle has a 4 digit serial number, so maybe it is a very early 1957. I modified one of these 2452's to fit. Not sure if you have the same hammer. I am wondering if, sometime in 1957, Marlin started using a hammer that had the sides milled to accept a hammer spur. There may be one that is currently manufactured to fit my style hammer, but I couldn't find it. It was a good project while it rained all day.

Hopefully the Uncle Mike's #2452-0 will fit your hammer. As of 3 days ago Brownell's had them in stock.
The hammer on my 57 SC was like that, and I changed it for one of the newer old style, that would take a hammer extension. Otherwise you can't find a suitable extension. I bought a complete hammer assembly on Gunbroker for $20.
 

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Had the same problem as Halwg with my 51A in 35 rem.. Swany told me that the early 336's that weren"t D&T'd had different hammer angles and no grooves milled in bottom of hammer. I purchased an extension from Numrich and it didn't work because it was so thick the bolt hit it when you tried to lever in a round. Good luck on the search.
 

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biggog said:
Had the same problem as Halwg with my 51A in 35 rem.. Swany told me that the early 336's that weren"t D&T'd had different hammer angles and no grooves milled in bottom of hammer. I purchased an extension from Numrich and it didn't work because it was so thick the bolt hit it when you tried to lever in a round. Good luck on the search.
You need to replace the hammer, and all will be well.
 

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Thank you all for the information. I will be on the lookout for a hammer that is milled for an extension. Until I find one, the Uncle Mike's extension that I modified works perfectly, and does not get in the way when levering in a round. In fact, the clearance when the bolt is levered back is the same as on my 1967 WesternField 740A, which has it's original flat hammer spur, without the "JM."

Am I correct in thinking that with a 4-digit serial number, my 35 Rem is a very early 1957?
 
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