Description The Arisaka Offset M620 Adapter is used to attach Surefire M620, M951/952/962 series lights to the Arisaka Offset Scout Mount and Side Scout Mount. The recessed design maintains a low profile. Lateral positions are still available while using the M620 Adapter, which allows you to shift the light closer or further away from the top Picatinny rail for clearance around front sights or other top rail mounted accessories when used with the Offset Scout Mount. Now compatible with Surefire M620 Scout lights and Surefire Millennium lights (M951, M952, M962, etc.) The M620 Adapter does not include an Offset Scout Mount or Side Scout Mount. A compatible mount must be purchased in addition to the M620 Adapter (Picatinny mounts not compatible). Compatible Mounts: Offset Scout Mount KeyMod Offset Scout Mount M-Lok Offset Scout Mount CMR Side Scout Mount KeyMod Side Scout Mount M-Lok Specs Length: 2.15" Weight: 0.4 oz The mount is CNC machined from 6061-T651 aluminum and MIL-A-8625 Type III hard coat anodized. Includes necessary screws to attach light body to adapter. Requires a 1/8" Allen wrench and IP20 TorxPlus driver for installation (not included). Hardware: Two 8-32x3/8" Torx flat head screws, two 10-32x1/4" hex button head screws Made in the USA.