Smith & Wesson M&P Shield 40 Magazine - 6 Round .40 S&W - Factory OEM 199330000 j442n and the spring provides the

and the spring provides the tension that keeps the bolt engaged

Part #: 139

Smith & Wesson Model 39 Drawbar - Used OEM Part

Not sure if this fits your revolver

Smith & Wesson M&P Shield 40 Magazine - 6 Round .40 S&W - Factory OEM 199330000 j442n and the spring provides theSmith & Wesson M&P Shield 40 Magazine 6 Round Factory OEM Part #199330000 Genuine Smith & Wesson factory 6 round magazine designed for M&P Shield . 40 S&W pistols. Compact flush fit magazine ideal for concealed carry. Key Features: Factory OEM quality and fit 6 round capacity for . 40 S&W Flush fit design for concealment Reliable feeding and function Durable steel construction Polymer follower and base plate Compatibility: Compatible with: M&P Shield