Mag Kahr Pm40 & Mk40 40sw 6rd W/ext

The Kahr Arms Mag Kahr PM40 & MK40 40 S&W 6-round magazine with extension is a OEM replacement magazine engineered to match Kahr's exacting tolerances for the PM40 and MK40 compact pistol platforms. Built from steel with a polymer baseplate, this magazine delivers the durability and reliability required for duty carry, training, and defensive use in 40 S&W. The extended baseplate adds grip real estate and round capacity compared to the flush-fit variant, making it the preferred choice for shooters seeking improved ergonomics without sacrificing concealability.

The 6-round capacity fills the gap between compact pocket carry and full-duty capability. Steel construction resists deformation under repeated loading and unloading cycles, while the polymer baseplate absorbs impact and aids in rapid reloads. The magazine's dimensions—2.75 x 1.3 x 7.37 inches—ensure it functions reliably in the PM40 and MK40 while remaining compact enough for deep concealment. Weighing just 0.19 lbs, the magazine adds minimal burden to carry systems. OEM manufacture means feed geometry, witness holes, and spring rates are optimized specifically for Kahr's reliable single-action triggers and tight tolerances.

This magazine is essential for PM40 and MK40 owners who need a spare for off-duty carry, training sessions, or tactical loadouts where a second magazine is carried as backup. LEOs and armed professionals who select Kahr's compact line benefit from having OEM magazines that maintain function across thousands of rounds without degradation. The extended baseplate variant is favored by operators who want ergonomic grip extension and are willing to sacrifice minimal concealment advantage in exchange for faster, more confident reloads under stress.