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05-28-2020, 05:59 PM
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Rebound spring across frame sizes
Question: Are the factory rebound springs (I understand to be 18 lbs), the same part number across the different frames ? Specifically, I have a sluggish trigger return on my J-frame model 36 (1971 vintage). I want to take the factory rebound spring from my 686-2 and put it in the M36. Are they the same size ? Thanks.
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05-28-2020, 06:30 PM
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K, L, N are the same. I believe the J Frame spring is smaller.
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05-28-2020, 08:17 PM
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No, the rebound slide spring in my wife's 60-15 is the same as the ones in all my N frame guns. They are interchangeable.
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05-28-2020, 08:36 PM
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Should have done some research before my reply. They are the same.
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05-29-2020, 09:35 AM
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They are not the same. J-Frame rebound slide springs are 15 coils and part number 03105 and all others are 17 coils and part number 07028. Unless this has changed??
Stu
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05-29-2020, 03:27 PM
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Quote:
Originally Posted by stu1ritter
They are not the same. J-Frame rebound slide springs are 15 coils and part number 03105 and all others are 17 coils and part number 07028. Unless this has changed??
Stu
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Nothing have changed, different spring on J frame and same on all other frame sizes.
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05-30-2020, 12:13 PM
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Quote:
Originally Posted by stu1ritter
They are not the same. J-Frame rebound slide springs are 15 coils and part number 03105 and all others are 17 coils and part number 07028. Unless this has changed??
Stu
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They are the same. SW does not make their own springs For JKLN
18 lbs
Rebound Springs
Rebound Springs - Trigger rebound springs are common to all Smith & Wesson J, K, L and N frame revolvers. These springs greatly influence the double action trigger pull which is a major concern of competitive shooters. W.C. Wolff company offers reduced power rebound springs rated from 12 to 16 pounds. For reference, the factory rebound spring is 18 pounds. These springs lighten trigger and let-off functions for smoother and easier trigger pull. We offer these springs in several assortment paks as well as individually.
https://www.gunsprings.com/SMITH%20&...D58/dID264#449
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05-30-2020, 12:36 PM
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Rule 3, I suggest you go to Brownell's web site and put in both part numbers that I listed above and read the applications for both. 031050000 is listed for all J frames and 070280000 for all else.
Stu
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05-30-2020, 01:14 PM
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Quote:
Originally Posted by stu1ritter
Rule 3, I suggest you go to Brownell's web site and put in both part numbers that I listed above and read the applications for both. 031050000 is listed for all J frames and 070280000 for all else.
Stu
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Brownells can number them anyway they want, they get their springs from Wolff.,as does Jerry, Miculuek and everyone else that sells "trigger jobs in a package"
Those are SW "branded" part numbers.
buy them at Midway
Wolff Trigger Rebound Spring S&W J K L N-Frame 14 lb Reduced Power
I have many bags of them from packs were I did not use some of the really light ones, direct fro GunSprings.
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05-30-2020, 01:17 PM
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Those part numbers are from S&W. No sense in continuing here.
Stu
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05-30-2020, 07:44 PM
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Numrich Arms
Thanks for the replies. To be on the safe side, I will just order the part through Numrich directly out of a M36.
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05-30-2020, 11:01 PM
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Here's a link to Midway USA who has the factory installed J-frame rebound slide spring for your model 36.....S&W part number 03105.
BTW, in case you're confused, as has been stated before, the factory rebound springs for the J-frame are different than the K,L, and N frame factory rebound springs, which S&W lists as part number 07028.
To answer the OP's original question, the rebound slide springs for the J frame and the K,L,and N frame revolvers are not interchangeable.
Smith & Wesson Rebound Slide Spring S&W 31 32 34 36 37 38 42 49 60 63
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Last edited by armorer951; 05-31-2020 at 11:48 AM.
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05-31-2020, 08:44 AM
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Interesting discussion on "Rebound Springs".. It was said above that "Trigger rebound springs are common to all Smith & Wesson J, K, L and N frame revolvers." That is true, as far as it goes. They all have rebound springs. Hammers and triggers are common to all S&W revolvers, but that does not mean they are all the same. I'm thinking that all rebound springs, common to S&W Revolvers, while common , are not the same.
Does it follow that the Rebound Slide, while common to all S&W, are the same? I think not. Ergo, commonality of a part does not necessarily mean they are the same. Research almost always carries more weight than Opinion. So it goes.
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05-31-2020, 08:56 AM
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And now my head hurts.
Not really worried because:
1. I don't have any L Frames.
2. My only J frame does not need rebound spring attention.
3. Eveybody agrees K and N frames share the same spring.
That's all folks.
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05-31-2020, 08:58 AM
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So Wollf Gunsprings has been selling millions of springs indicating they are are for all frame sizes.?
Yet, the specific J frame spring is one and only one poundage (which is not listed) and Midway has only 3 left?
Other than color what is the exact difference in the SW branded part number.? If one wants to reduce the rebound spring poundage then what clip and guess?
Gunsmiths have been using the Wolff packages for many years.
Yep, "No sense in continuing here."
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05-31-2020, 09:41 AM
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As mentioned above, the J is 15 coils and the rest are 17 coils and as to Wolf and reduced strength springs, once you change to a lighter spring the original specs don't matter anymore. The OP's question was about taking an original L frame rebound spring and putting it in a J frame and about them being the same part number, which they are not.
Stu
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05-31-2020, 11:43 AM
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Quote:
Originally Posted by stu1ritter
As mentioned above, the J is 15 coils and the rest are 17 coils and as to Wolf and reduced strength springs, once you change to a lighter spring the original specs don't matter anymore. The OP's question was about taking an original L frame rebound spring and putting it in a J frame and about them being the same part number, which they are not.
Stu
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OK, yes the "original" are 15 coils amd a lovely shade of blue. You are correct that the factory put those in. If the OP wishes to have it exactly as factory and the associated weight then by all means get the SW official colored spring.
I have several sitting here in front of me, they have been replaced by slightly lighter ones.
What is the factory weight of that blue spring????
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05-31-2020, 12:18 PM
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Has anyone tried to put a full length K L N spring in a J Frame? That 2 coils makes all the difference. I guess you could take the wanted spring, 14, 15, 16 and cut 2 coils off and make it fit a J and get the same result. I haven't tried that.
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05-31-2020, 12:54 PM
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At the risk of being redundant......and the fact that despite the nature of the original OP question, some seem to be referring to two different labeled manufacturer's springs for some reason, here's some hard data concerning the S&W rebound slide springs, and the "aftermarket" rebound springs manufactured by Wolff.
S&W factory installed rebound slide springs:
Wire diameter, all: .036"
Coil diameter: .185" - ends closed/flat ground
OAL for K, L, N frame: approx. 1.175"
OAL for J frame: approx 1.050"
Wolff "aftermarket" rebound slide springs:
Coil diameter: .190" - ends closed, not ground
rated pounds / wire diameter / approx OAL / # coils
11 .030" 1.20" 17
12 .030" 1.40" 18
13 .032" 1.115" 17
14 .032 1.190" 17
15 .032 1.260" 17
16 .032" 1.360" 17
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Last edited by armorer951; 05-31-2020 at 01:55 PM.
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05-31-2020, 03:48 PM
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Quote:
Originally Posted by armorer951
At the risk of being redundant......and the fact that despite the nature of the original OP question, some seem to be referring to two different labeled manufacturer's springs for some reason, here's some hard data concerning the S&W rebound slide springs, and the "aftermarket" rebound springs manufactured by Wolff.
S&W factory installed rebound slide springs:
Wire diameter, all: .036"
Coil diameter: .185" - ends closed/flat ground
OAL for K, L, N frame: approx. 1.175"
OAL for J frame: approx 1.050"
Wolff "aftermarket" rebound slide springs:
Coil diameter: .190" - ends closed, not ground
rated pounds / wire diameter / approx OAL / # coils
11 .030" 1.20" 17
12 .030" 1.40" 18
13 .032" 1.115" 17
14 .032 1.190" 17
15 .032 1.260" 17
16 .032" 1.360" 17
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Coils and wire diameters alone are nothing without the pounds A longer or shorter spring can be used depending on the coils and wire,
What pound rating is the "original" Blue 15 coil SW Spring?
Who is the OEM for SW springs???? SW to my knowledge does not have it's own spring factory.
If it is 18 lbs then by all means, if someone whats to put a 18lb spring back in, then the factory original is the way to go as Gunsprings doesn't have that,
If a 16 lb spring (or less) is preferred then they work just fine. Which is why I have several "blue" ones in my parts box.
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