Samson Manufacturing 040602801: Samson Manufacturing\'s one-piece, no-gunsmithing magazine well brings even more control. It allows you to establish a full firing grip which increases your control for rapid shot recovery. The magwell features beveling cuts for quicker reloads, an extended finger groove, and is constructed of 6061-T6 aluminum with a hardcoat anodized finish. This model has a black finish and is compatible with S&W M&P Shield 9/M&P Shield 9 M2.0.