Pearce Grip MAGAZINE EXTENSION PG-MPS M&P SHIELD & SHIELD 2.0 PLUS PG-MPSPLUS. 0 PLUS Specifications for Pearce Grip MAGAZINE EXTENSION FOR S&W: Manufacturer: Pearce Grip Gun Model: Smith & Wesson M&P 9 Shield Plus Magazine Capacity: 0 Round Package Contents: Pearce Grip MAGAZINE EXTENSION FOR S&W What firearm models does the manufacturer say Pearce Grip MAGAZINE EXTENSION FOR S&W is compatible with? The manufacturer suggests that Pearce Grip MAGAZINE EXTENSION FOR S&W is compatible with Smith & Wesson M&P 9 Shield PlusPearce Grip PG-MPSPLUS: MAGAZINE EXTENSION PG-MPS M&P SHIELD & SHIELD 2.0 PLUS