The Arisaka Side Scout Mount (SSM) is designed for use with Surefire Scout Lights, the Modlite PLH and OKW weapon lights, the Arisaka 300" 600 and 18650 Series, the Streamlight Protac Rail Mount lights, and the Olight Odin. It replaces the stock Picatinny rail adapter with a low profile mount for M-Lok handguards, and tucks the light underneath either side of the ATPIAL laser/illuminator series, including the ATPIAL-C, AN/PEQ15" and LA-5/PEQ. It will also allow the light to clear an NGAL and the QD lever on the Steiner DBAL I2" A3" and D2. Compatible with the Modlite PLH, PLHv2 and OKW, 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 (non-laser), Olight Odin, CD REIN, and Arisaka 300" 600 and 18650 Series.Features : ,Length: 1.66";"Thickness: 0.2"" Weight: 0.6 oz ,Hardware: Two 8-32x5/16" Torx flat head screws, two 8-32x3/8" Torx flat head screws, Made in the U.S.A.