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!