Smith & Wesson Chief's Special CS9 / CS40 / CS45 Mainspring Part# 263370000

Smith & Wesson Chief's Special CS9 / CS40 / CS45 Mainspring

Part# 263370000 | OEM Factory Replacement | Brand New

This is the factory original Smith & Wesson mainspring for the Chief's Special compact pistol series. Manufactured to the exact same specifications, tolerances, and materials as the original part — ensuring a proper fit and reliable function.

Part Details

• Part Number: 263370000
• Condition: Factory New OEM

Compatible Models

• CS9D — 9mm
• CS40C, CS40D, CS40S — .40 S&W
• CS45C, CS45D, CS45S — .45 ACP

Installation

Disassembly and reassembly of the pistol is required to replace this part. Installation and fitting by a qualified gunsmith is recommended.

This listing is for the mainspring only. Have questions? Call or email us — we're happy to help.