HYVE Technologies Magazine Extension Base Pad Smith & Wesson M&P Shield 9mm 7-Round Mag 1-Round Black Small. Starting with the M&P Shield 9mm +1 extension for the Shield 9mms 7 round factory magazine. The classic Hyve style extension matches the lines of the grip adds one extra round to your factory magazine and makes holding the firearm a very pleasant experience Like our other extensions it is machined from Aluminum anodized in our standard 8 Colors and of course this product is manufactured 100percent in The U.S.A. Specifications for HYVE Technologies Magazine Extension Base Pad for M&P Shield 9mm 7-Round Mag: Manufacturer: HYVE Technologies Fabric/Material: 6061-T6 Aluminum Finish: Anodized Magazine Capacity: 1 Round Gun Make: Smith & Wesson Gun Model: Smith & Wesson M&P 9 Shield Condition: New Features of HYVE Technologies Magazine Extension Base Pad for M&P Shield 9mm 7-Round Mag Round capacity +1 Package Contents: HYVE Technologies Magazine Extension Base Pad for M&P Shield 9mm 7-Round Mag What firearm models does the manufacturer say HYVE Technologies Magazine Extension Base Pad for M&P Shield 9mm 7-Round Mag is compatible with? The manufacturer suggests that HYVE Technologies Magazine Extension Base Pad for M&P Shield 9mm 7-Round Mag is compatible with Smith & Wesson M&P 9 ShieldHYVE Technologies SW9-E1-1: Magazine Extension Base Pad Smith & Wesson M&P Shield 9mm 7-Round Mag 1-Round Black Small