XTech Tactical MTX M&P9 Magazine Extender Kit - +5 Rounds

Unlike other extenders on the market, The Patent Pending design of the MTX permits for a consistent internal wall throughout the extender, which is smaller than the magazine tube. The included spring was engineered specifically for the M&P9 line to allow for unmatched reliability and last round slide hold open. XTech Tactical s MTX line of extenders are simply unmatched for reliability, ease of installation, and durability! Technical Specifications Custom Engineered Spring Innovative Design For 100% reliable function Tool free, easy installation Rugged Construction Fits Full Size M&P9 and M&P9 2.0 Uses Factory Follower & Body (Not Included) Patent Pending Made in USA