Smith & Wesson M&P Shield 45 Recoil Guide Assembly - M2.0 & 1.0 - Factory OEM 3001613 butt stock The dash number (-2) indicates

The dash number (-2) indicates the second engineering change to the Model 29 design

Trigger Pin

037960000 Smith & Wesson revolver

You should see "18" or a dash variant like "18-1"

It's popular for target shooting

Smith & Wesson M&P Shield 45 Recoil Guide Assembly - M2.0 & 1.0 - Factory OEM 3001613 butt stock The dash number (-2) indicatesSmith & Wesson M&P Shield . 45 Recoil Guide Assembly Factory OEM Part #3001613 Genuine Smith & Wesson factory recoil guide assembly designed specifically for M&P Shield . 45 ACP pistols (1. 0 and 2. 0 generations). Key Features: Factory OEM quality and precision Complete recoil guide assembly Maintains proper slide velocity Direct replacement for worn components Reduces wear on frame and slide Compatibility: Compatible with: M&P Shield . 45 ACP 1. 0