• MPS-12 allows modifying the original 8 round magazine of the M&P Shield into a full capacity 12 round single magazine, all without having to replace the original magazine spring.
  • Additional 4 rounds for a total of 12 rounds in the magazine Innovative spring plate design, requires no changes made to the original magazine Contoured finger indents for a firm grip during magazine manipulation Easy installation, no Gunsmith required Fiberglass reinforced polymer construction
  • 8 Round, S&W M&P®9 SHIELD™ - original factory extend capacity magazine only
Weight
39 gr