Guaranteed to give you an edge, ODIN Works has designed their PMBs (Pistol Magazine Bases) with the competitive and noncompetitive shooter in mind. Introducing the Smith & Wesson M&P PMB: Ergonomically machined to fit perfectly in the palm of your hand for effortless stripping, the weighted base allows for rapid mag changes and 4 to 5 extra rounds all while remaining well within the 140 mm gauge limits of USPSA.

Features :

• ,Dimensions: 1.6" x 1.2" x 1.25" at widest points,
• Weight: 1.3 oz (Base and Screw)
• Material: 6061 Aluminum
• Compatibility:Smith & Wesson M&P 9 / M&P 40
• Capacity: +5 / +4
• Includes: Extra Power Spring, Threaded Push-Pin, Allen Wrench