The Arisaka Side Scout Mount (SSM) replaces the picatinny rail adapter with a low-profile mount that tucks the light underneath either side of your ATPIAL laser/illuminator, ATPIAL-C, AN/PEQ15, or LA-5/PEQ. It will also allow the light to clear the QD lever on the Steiner DBAL I2, A3, and D2. It is designed for use with Surefire Scout Lights, the Arisaka 300 and 600 Series, and the Streamlight Protac Rail Mount lights. NoteCompatible with the Surefire M300A, M300B, M300C, M300V, M312, M322, M312V, M313V, M322V, M600B, M600C, M600P, M600U, M600V, M600DF, M612, M622, M603V, M612V, M622V, Streamlight Protac Rail Mount 1, 2 and HL-X, and Arisaka 300 and 600 Series.Requires a 1/8" Allen wrench and IP20/T20 Torx driver for installation (not included). A T9 Torx driver is required to remove the stock Picatinny mount from Surefire Scout Lights. Recommended torque: 15-20-inch lbs. for light body and clamping screws with medium strength thread locker.