S&W M&P 45 S-Lever Housing Block - Factory OEM Part 393760000 k547n Factory original Smith & Wesson

Factory original Smith & Wesson magazine catch nut for the Model 639 stainless steel 9mm pistol

This barrel is specifically for

Part Name: Magazine

the L Frame is slightly larger and stronger

S&W M&P 45 S-Lever Housing Block - Factory OEM Part 393760000 k547n Factory original Smith & WessonSmith & Wesson M&P 45 S Lever Housing Block Factory OEM Part #393760000 Genuine Smith & Wesson factory S Lever (sear lever) housing block for M&P 45 pistols with magazine safety. Critical frame component that houses the S Lever mechanism. Key Features: Factory OEM quality and precision Precision molded polymer construction Houses S Lever mechanism For models with magazine safety Direct replacement part Compatibility: Compatible with: M&P 45 Full Size