This version of the quick detach rail system SWITCH is a Rainier Arms exclusive.
The SWITCH is an extremely lightweight, yet robust free float rail system designed for the 5.56MM platform.  When designing the SWITCH, we wanted a handguard that was easy to install, but also be able to quickly change rails for a variety of mission or competition specific setups.  The rail features a brand new patent pending locking mechanism that allows tool-less removal of the rail.The rail features KeyMod slots, QD attachments point as well as a full picatinny rail on top.The rail design not only looks great, but is very functional in your hand.  The piece adds minimal weight to the rifle and you won't be disappointed! Features:

    Material: Aircraft Grade 6061-T6 Aluminum / Locking handle: 7075-T6 Aluminum
    Internal Diameter: 1.34"
    Length: 9 1/4" or 14.75”
    (9" Rail) Weight: 8.8 ounces with barrel nut.  Barrel nut is 1.6oz.
    (14" Rail) Weight: 11.6 ounces with barrel nut.  Barrel nut is 1.6oz.
    Conttinuous Top Rail
    Rotation Limited QD Sockets
    KeyMod at the 3, 6, & 9 o'clock
    Mil. Spec. Hard-coat Anodized
    4140 heat treated barrel nut (1-7/16 X 16 T.P.I.)
    Clamp torque setting 20 in lbs  **Please be sure to read instructions
    Spanner wrench needed to torque barrel nut to spec (not included)
    Made in the USA!
    AR-15 Switch Rail Instructions