I have an older STI model and I need to know the recoil and/or the main spring weight.

Pistol

Caliber

Barrel Length / Type

Recoil System

Recoil Spring Weight

Main Spring Weight
Aperio .40 S&W 5″ Bull Island Barrel, Ramped, Dovetail Cut For Front Slide 5.0 Recoil Master with Reverse Plug Heavy Recoil Master 15 lbs.
.45 acp Heavy Recoil Master +P
9mm Light Recoil Master
Combat Master 9×19 5.4″ Bull Barrel, Ramped, Bronze-Copper TiN 5.4″ Dawson Tooless Guide Rod
Costa Carry Comp 9mm 4.15″ Bull Barrel, Ramped, Island Comp 4.15 Recoil Master Light Recoil Master 15 lbs.
45 ACP Heavy Recoil Master 19 lbs.
Duty One 3.0 .45 ACP 3″ Bull Barrel, Ramped 3.0 Recoil Master with Reverse Plug Heavy Recoil Master +P 25 lbs. Officer Length
9×19 Light Recoil Master 19 lbs. Officer Length
9×21
Duty One 4.0 .45 ACP 4.15″ Bushing Barrel, Ramped 4.15 Recoil Master with Spring Plug Heavy Recoil Master 19 lbs.
9×19 Light Recoil Master
9×21
Duty One 5.0 .45 ACP 5″ Bushing Barrel, Ramped One Piece Guid Rod with Spring Plug 18 lbs. 19 lbs.
9×19
9×21
Duty One Lite 3.0 .45 ACP 3″ Bull Barrel, Ramped 3.0 Recoil Master with Reverse Plug Heavy Recoil Master +P 25 lbs. Officer Length
9×19 Light Recoil Master 19 lbs. Officer Length
9×21
Duty One Lite 4.0 .45 ACP 4.15″ Bushing Barrel, Ramped 4.15 Recoil Master with Spring Plug Heavy Recoil Master 19 lbs.
9×19 Light Recoil Master
9×21
Duty One Lite 5.0 .45 ACP 5″ Bushing Barrel, Ramped One Piece Guid Rod with Spring Plug 18 lbs. 19 lbs.
9×19
9×21
DVC 3 9×19 5.4″ Bull Barrel, Ramped, Titanium Nitride 5.4″ Dawson Tooless Guide Rod
DVC C 9×19 3.9 Recoil Master Light VIP Mainspring
DVC C DUO
DVC Limited .357 Sig 5″ Bull Barrel, Ramped, Titanium Nitride 5″ Dawson Tooless Guide Rod 19 lbs.
.38 Super
.40 S&W
9×19
9×21
DVC Omni .45 ACP 5″ Bushing Barrel, Ramped 5″ Dawson Tooless Guide Rod 19 lbs.
9×19 9 lbs.
DVC Open .38 Super 5″ Trubor TX, Ramped, Titanium Nitride 5″ Dawson Tooless Guide Rod 10 lbs. 15 lbs. with 3 coils cut (COMP SPRING)
9×19
9×21
DVC P 5″ Dawson Tooless Guide Rod 8 lbs.
DVC Steel 4.15″ TX1 Compensated Barrel 5″ Dawson Tooless Guide Rod 7 or 8 lbs. 15 lbs. with 3 coils cut (COMP SPRING)
Eagle 5.0 .40 S&W 5″ Bushing Barrel, Ramped One Piece Guid Rod with Spring Plug 14 lbs. 15 lbs.
9×19
9×21
Eagle 6.0 .40 S&W 6″ Bushing Barrel, Ramped Two Piece Guid Rod with Spring Plug 12 lbs. 15 lbs.
9×19
9×21
Edge .38 Super 5″ Bull Barrel, Ramped 5.0 Recoil Master with Reverse Plug Light Recoil Master 15 lbs.
.40 S&W Heavy Recoil Master
45 ACP Heavy Recoil Master +P
9×19 Light Recoil Master
9×21
Elektra (all models) .45 ACP 3″ Bull Barrel, Ramped 3.0 Recoil Master with Reverse Plug Heavy Recoil Master +P 25 lbs. Officer Length
9×19 Light Recoil Master 19 lbs. Officer Length
.38 Super
Escort .45 ACP 3″ Bull Barrel, Ramped 3.0 Recoil Master with Reverse Plug Heavy Recoil Master +P 25 lbs. Officer Length
9×19 Light Recoil Master 19 lbs. Officer Length
Executive .40 S&W 5″ Bull Barrel, Ramped 5″ Dawson Tooless Guide Rod 14 lbs. 15 lbs.
45 ACP
9×19
GP6 9×19 4.25″ One piece Contact Grand Power USA (grandpowerusa.net)
Guardian .45 ACP 3.9″ Bull Barrel, Ramped 3.9 Recoil Master with Spring Plug Heavy Recoil Master 25 lbs. Officer Length
9×19 Light Recoil Master 19 lbs. Officer Length
Hawk 5.0 9×19 5″
Lawman 3.0 .45 ACP 3″ Bull Barrel, Ramped 3.0 Recoil Master with Spring Plug Heavy Recoil Master +P 25 lbs. Officer Length
9×19 Light Recoil Master 19 lbs. Officer Length
9×21
Lawman 4.0 .45 ACP 4.15″ Bushing Barrel, Ramped 4.15 Recoil Master with Spring Plug Heavy Recoil Master 19 lbs.
9×19 Light Recoil Master
9×21
Lawman 5.0 .45 ACP 5″ Bushing Barrel, Ramped One Piece Guid Rod with Spring Plug 18 lbs. 19 lbs.
9×19
9×21
Marauder 9×19 5″ Bushing Barrel, Ramped One Piece Guid Rod with Spring Plug 10 lbs. 15 lbs.
9×21
Match Master (with Recoil Master) .38 Super 4.15″ Trubor T2, Ramped 5.0 Recoil Master with Reverse Plug Light Recoil Master 15 lbs. with 3 coils cut (COMP SPRING)
9×19
9×21
Match Master (with Full Length Guide Rod) .38 Super 5″ Full Length Guide Rod 8 lbs. (minor) / 10 lbs. (major)
9×23
9×25
Nitro 10 10mm 5″ Bull Barrel, Ramped One Piece Guid Rod with Reverse Plug 26 lbs. 25 lbs.
Perfect 10 10mm 6″ Bull Barrel, Ramped Two Piece Guid Rod with Reverse Plug 18 lbs. 19 lbs.
Range Master .45 ACP 5″ Bull Barrel, Ramped 5.0 Recoil Master with Reverse Plug Heavy Recoil Master +P 19 lbs.
9×19 Light Recoil Master
9×21
Sentinel Premier .45 ACP 5″ Bushing Barrel, Ramped 5.0 Recoil Master with Reverse Plug Heavy Recoil Master +P 19 lbs.
9×19 Light Recoil Master
9×21
Shadow .40 S&W
45 ACP
9×19
Spartan IV .45 ACP 4.26″ Bull Barrel, NOT Ramped One Piece Guid Rod with Reverse Plug Commander Length 16~17 lbs.
9×19 Commander Length 9~10 lbs.
Spartan 45 ACP 5″ Bushing Barrel One Piece Guid Rod with Reverse Plug 18 lbs. 19 lbs.
Steel Master 9×19 4.15″ Trubor T1, Ramped 5.0 Recoil Master with Reverse Plug Light Recoil Master 15 lbs. with 3 coils cut (COMP SPRING)
5″ Full Length Guide Rod 10 lbs. (minor) / 12 lbs. (major)
Steel Master 9×19 4.15″ Trubor T1, Ramped 5.0 Recoil Master with Reverse Plug Light Recoil Master 15 lbs. with 3 coils cut (COMP SPRING)
5″ Full Length Guide Rod 10 lbs. (minor) / 12 lbs. (major)
Tactical DS 4.0 .40 S&W 4.15″ Bull Barrel, Ramped 4.15 Recoil Master with Reverse Plug Heavy Recoil Master 15 lbs.
45 ACP
9×19 Light Recoil Master
Tactical DS LITE 4.0 .40 S&W 4.15″ Bull Barrel, Ramped 4.15 Recoil Master with Reverse Plug Heavy Recoil Master 15 lbs.
47 ACP
9×21 Light Recoil Master
Tactical DS TR 4.0 .40 S&W 4.15″ Bull Barrel, Ramped, Threaded 4.15 Recoil Master with Reverse Plug Heavy Recoil Master 15 lbs.
46 ACP
9×20 Light Recoil Master
Tactical DS TR LITE 4.0 .40 S&W 4.15″ Bull Barrel, Ramped, Threaded 4.15 Recoil Master with Reverse Plug Heavy Recoil Master 16 lbs.
47 ACP
9×21 Light Recoil Master
Tactical DS 5.0 .40 S&W 5.0″ Bull Barrel, Ramped One Piece Guid Rod with Reverse Plug 14 lbs. 15 lbs.
45 ACP
9×19
9×21
Tactical DS TR 5.0 .40 S&W 5.0″ Bull Barrel, Ramped, Threaded One Piece Guid Rod with Reverse Plug 14 lbs. 15 lbs.
45 ACP
9×19
9×21
Target Master
Trubor .38 Super 5″ Trubor T2, Ramped One Piece Guid Rod with Spring Plug 10 lbs. 15 lbs. with 3 coils cut (COMP SPRING)
9×19
9×21
Trojan Lite 9×19 5″ Bushing Barrel, Ramped One Piece Guid Rod with Spring Plug 10 lbs. 15 lbs.
9×21
Trojan & Trojan SS .38 Super 5″ Bushing Barrel, Ramped One Piece Guid Rod with Spring Plug 12 lbs. 15 lbs.
.40 S&W
45 ACP
9×19
9×21
Trojan 6.0 .40 S&W 4.15″ Bull Barrel, Ramped, Threaded 4.15 Recoil Master with Reverse Plug Heavy Recoil Master 15 lbs.
46 ACP
9×20 Light Recoil Master
Target Master .45 ACP 6″ Bull Barrel, Ramped Two Piece Guid Rod with Reverse Plug 16 lbs. 19 lbs.
9×19
Tactical SS 4.0 .45 ACP 4.15″ Bull Barrel, Ramped, Threaded 4.15 Recoil Master with Reverse Plug Heavy Recoil Master 19 lbs.
9×19 Light Recoil Master
Tactical SS TR 4.0 .45 ACP 4.15″ Bull Barrel, Ramped, Threaded 4.15 Recoil Master with Reverse Plug Heavy Recoil Master 19 lbs.
9×19 Light Recoil Master
Tactical SS 5.0 .45 ACP 5″ Bull Barrel, Ramped One Piece Guid Rod with Reverse Plug 18 lbs. 19 lbs.
9×19
Tactical SS TR 5.0 .45 ACP 5″ Bull Barrel, Ramped, Threaded One Piece Guid Rod with Reverse Plug 18 lbs. 19 lbs.
9×19
For models not listed, please contact Staccato 2011
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