Recoil springs are available in a variety of load ratings to allow adjustment of the recoil function to meet various requirements. All load-rated recoil springs include an extra power firing pin spring. Recoil Calibration paks listed below recoil springs when available.
All recoil springs below are conventional design unless noted otherwise. Not for use in M&P series pistols.
 

RECOIL SPRINGS

For Use in:
    39, 439, 539 ,639, 3904, 3906, 3944, 3946, 9mm
    59, 459, 559, 659, 5903, 5904, 5906, 9mm
    5923, 5924, 5926, 5943, 5944, 5946, 9mm
    659, 909, 910, 915, 9mm

• Reduced Power...: 8, 10 & 12 Lb.
• Factory Standard.: 14 Lb.
• Extra Power........: 16, 17, 18, 20 & 22 Lb.

Recoil Calibration Pak below includes 1 each 14 pound factory recoil spring and 1 each of 16, 17, 18 and 20 pound extra power recoil springs. 3 extra power firing pin springs are also included.

For Use in:  
   469, 669, 908, 3913, 3914, 9mm
   3953, 3954, 5943, 5967, 6904, 9mm
   6906, 6924, 6926, 6944, 6946, 9mm

• Reduced Power...: 14 Lb.
• Factory Standard.: 15 Lb.
• Extra Power........: 16, 17, 18 & 20 Lb.

Recoil Calibration Pak below includes 1 each 15 pound factory recoil spring and 1 each of 16, 17, 18 and 20 pound extra power recoil springs. 3 extra power firing pin springs are also included.

For Use in:    
   645, 745, 4506, 4526, 4546, .45ACP

• Reduced Power : 8, 9, 10, 11 & 12 Lb. (Variable)
• Factory Standard : 14 Lb.
• Extra Power : 15, 16, 17, 18, 20, 22 & 24 Lb.

Recoil Calibration Pak below includes 1 each of 15, 16, 17, 18 and 20 pound extra power recoil springs. 3 extra power firing pin springs are also included.

For Use in:
    4013*, 4014*, 4053*, 4054*, .40 S&W
    4516, 4516-1, 4536, 4556, 4596, .45 ACP (Call for 4516)
      * Not for Rev. 4, dual recoil spring models.

• Reduced Power...: 15 Lb.
• Factory Standard.: 16 Lb.
• Extra Power........: 17, 19, 21 & 23 Lb.

Recoil Calibration Pak below includes 1 each 16 pound factory recoil spring and 1 each of 17, 19 and 21 pound extra power recoil springs. 3 extra power firing pin springs are also included.

For Use in:
    4566, 4567, 4576, 4586, .45 ACP
    1066, 1076, 1086, 10mm

• Reduced Power...: 14 & 16 Lb.
• Factory Standard.: 17 Lb.
• Extra Power........: 18, 19, 20 & 22 Lb.

Recoil Calibration Pak below includes 1 each 17 pound factory recoil spring and 1 each of 18, 19, 20 and 22 pound extra power recoil springs. 3 extra power firing pin springs are also included.

For Use in:
    1006 and 1026, 10mm

• Reduced Power...: 14, 15, 16 & 17 Lb.
• Factory Standard.: 18 Lb.
• Extra Power........: 20, 22 & 24 Lb.

For Use in:   
  410, 411, .40 S&W 
  4003, 4004, 4006, 4026, 4043, 4044, 4046, .40 S&W

• Reduced Power...: 12, 14 & 16 Lb.
• Factory Standard.: 17 Lb.
• Extra Power........: 18, 20 & 22 Lb.

Recoil Calibration Pak below includes 1 each 17 pound factory recoil spring and 1 each of 18, 20 and 22 pound extra power recoil springs. 3 extra power firing pin springs are also included.

For Use in:
    41, .22 Caliber - All Variable Recoil Springs

• Reduced Power...: 6, 6.5 & 7 Lb.
• Factory Standard.: 7.5 Lb.
• Extra Power........: 8 Lb.

Recoil Calibration Pak includes 1 each of 6, 6.5 and 7 pound reduced power variable recoil springs. 3 extra power firing pin springs are also included.

For Use in:    
   422, 622, 2206, 2213, 2214, .22 Caliber

• Reduced Power...: 4.5, 5 & 5.5 Lb,
• Factory Standard.: 6 Lb.
• Extra Power........: None Available

For Use in:    
   52-2, .38 Special - All Variable Recoil Springs

• Reduced Power...: 7 Lb.
• Factory Standard.: 8 Lb.
• Extra Power........: 9 & 10 Lb.

Recoil Calibration Pak below includes 1 each 8 pound factory and 1 each of 9 and 10 pound extra power, variable recoil springs. 3 extra power firing pin springs are also included.

Smith & Wesson pistols use 2 different hammer springs (Long - Group A & Short - Group B) for most centerfire semi-automatic pistols. Both springs have a factory rating of about 20 pounds. Hammer Spring Paks listed below individual hammer springs.
 

GROUP A Pistols - Long
For Use in:
    39*, 439, 539, 639, 3904, 3906, 3944, 3946, 9mm
    59*, 459, 559, 659, 5903, 5904 and 5906, 9mm
    5923, 5924, 5926, 5943, 5944, 5946, 5967, 9mm
    909, 910, 915, 9mm
    645, 745, 4506, 4526, 4536**, 4546, .45 ACP
    4566, 4567, 4576, 4586, 4596, .45 ACP
    1006, 1026, 1066**, 1076, 1086, 10mm
    410, 411, .40 S&W
    4003,4004, 4006,4026,4043,4044,4046***, .40 S&W

    *Early 39/ 59 pistols had a 22 Lb. factory spring.
    ** Some pistols may have short hammer springs
    ***Some 4046's have a 16 Lb. factory hammer spring.

• Reduced Power...: 16, 17 & 18 Lb.
• Factory Standard.: 20 Lb.
• Extra Power........: 22 & 23 Lb.

GROUP B Pistols - Short
For Use in:
    469, 669, 6904, 6906, 6924, 6926, 6944*, 6946*, 9mm
    3913(all), 3914 (all), 3953* and 3954*, 9mm
    4516, 4516-1 and 4556, .45 ACP
    457, 4013, 4014, 4053* and 4054*, .40 S&W
    * Some models have a 17 Lb. factory hammer spring.

• Reduced Power...: 17, 18 & 19 Lb.
• Factory Standard.: 20 Lb.
• Extra Power........: None Available

Not for use in models 52-2, Sigma Series, and M&P Series
Reduced power trigger return spring pak (draw bar plunger spring) offers 3 different springs to help improve double-action trigger performance in all Smith & Wesson centerfire semiautomatics in 9mm, 10mm, .45 ACP and .40 S&W calibers. Pak contains 1 each of 2.5, 3.0 and 3.5 pound reduced power trigger return springs to allow varying adjustment of the trigger. The factory spring is 4 pounds. These springs are particularly beneficial when used in conjunction with reduced power hammer springs listed above.

WARNING: Springs are for competition use only - NOT for duty use. 

Magazine springs for Smith & Wesson pistols are available in +5% for all listed models as well as +10% for selected models.

For Use in:
    469, 669, 6904, 6906, 6924, 6926, 6944, 6946, 9mm
    411,4003,4004, 4006,4026,4043,4044,4046, 4013 TSW (9 ROUND) .40 S&W

For Use in:
    4013, 4014, 4053 and 4054, .40 S&W

*Not for use in 4013 TSW 9 Round double stack magazines. See S&W 6900 series for 4013 TSW*

Firing Pin Spring - Available in extra power rating.

For Use in:
    39, 439, 539, 639, 3904, 3906, 3913, 3914, 3944, 3946, 3953, 3954,
    59, 459, 559, 659, 5903, 5904, 5906, 5923, 5924, 5926, 5943, 5944,
    5946, 5967, 469, 669, 6904,6906, 6924,6926, 6944, 6946,
    410, 411, 4003, 4004, 4006,4026,4043,4044, 4046,
    910, 915

Firing Pin Spring - Availble in extra power rating.

For Use in:
    645, 745, 4505, 4506, 4516, 4516-1, 4526, 4536, 457, 4546, 4556,
    4566, 4567, 4576, 4586, 4596,
    1006, 1026, 1066, 1076, 1086
    4013, 4014, 4053, 4054

Extractor spring - 6.5 pounds (factory spring is 6 pounds)
 

For Use in:
    39, 439, 539, 3904, 3906, 3944, 3946, 3953, 3954,
    59, 459, 559, 659, 5903, 5904, 5906, 5923, 5924, 5926, 5943,
    5944, 5946, 5967,
    410, 411, 4003,4004, 4006, 4026, 4043, 4044, 4046,
    910, 915

Extractor spring - 10 pounds (factory spring is 9 pounds)

For Use in:
    457, 645, 745, 4505, 4506, 4516, 4516-1, 4526, 4536, 4546,
    4556, 4566, 4567, 4576, 4586, 4596,
    1006, 1026, 1066, 1076, 1086,
    4013, 4014, 4053, 4054

Extractor spring - 18 pounds (factory spring is 17 pounds)

For Use in:
    469, 669, 6904, 6906, 6924, 6926, 6944, 6946, 3913, 3914

Magazine catch springs for Smith & Wesson pistols. Fits all numbered series pistols except .22 caliber pistols, M&P, & Sigma pistols.

SERVICE PAK TYPE I  For Smith & Wesson Centerfire Numbered Series Semi-Automatic Pistols (Gen 1 thru Gen 3) contains the following springs to replace weakened or broken springs, returning the pistol to original factory condition:

                                        ** For models with Adjustable Rear Sights only
 

SERVICE PAK TYPE II contains all springs described in Type I pak above and a +5% extra power magazine spring.

For Use in:
    39, 439, 539, 639, 3904,3906, 3944, 909, 9mm