Wolff Factory Standard Recoil Spring for Smith & Wesson 645/745/4506/4526/4546 .45 ACP 15 LB | Part 47315

Wolff 15 LB Factory Standard Recoil Spring for Smith & Wesson .45 ACP Pistols

Part Number: 47315

Premium Wolff 15 LB factory-standard recoil spring designed for Smith & Wesson .45 ACP pistols. Restores factory-specification performance and ensures reliable cycling. Includes an extra power firing pin spring for reliable primer ignition.

Compatible Models:

• Model 645 — Full size .45 ACP
• Model 745 — Competition .45 ACP
• Model 4506 — Full size .45 ACP stainless
• Model 4526 — Full size .45 ACP with decocker
• Model 4546 — Full size .45 ACP DAO

Package Includes:

• 1 Recoil Spring (15 LB) — Factory-standard spring weight
• 1 Extra Power Firing Pin Spring — Ensures reliable primer ignition

Key Features:

• 15 LB Factory Standard: Factory-specification spring weight for reliable operation
• Includes Firing Pin Spring: Extra power firing pin spring maintains reliable ignition
• Direct Replacement: Drop-in fit for factory recoil spring
• Premium Quality: Made in USA by Wolff Gunspringmakers — over 75 years of expertise
• Condition: New

Technical Specifications:

• Spring Type: Recoil Spring with Firing Pin Spring
• Spring Weight: 15 LB (Factory Standard)
• Caliber: .45 ACP
• Compatible Models: 645, 745, 4506, 4526, 4546
• Material: Premium spring steel
• Manufacturer: Wolff Gunspringmakers (USA)
• Package: 1 recoil spring + 1 firing pin spring

Installation:

Installation requires field stripping your pistol to access the recoil spring assembly. The firing pin spring requires further disassembly of the slide. If you are not comfortable performing this procedure, have a qualified gunsmith install the springs. Always function test with your carry ammunition after installation.