S&W M&P SHIELD PLUS, EQUALIZER 10/13 Magblock (9mm)
Fits 13 round 9mm M&P Shield Plus magazines.
- Easy installation at the base of the spring.
- Limits the magazine to 10 rounds of 9 mm.
- Held in place with spring tension or can be epoxied for a permanent modification.
- Lightweight, efficient design.