WII TECH CNC 6061 Aluminium S-4 Kit Compatible B-10L For Marui TM AKM GBB Series

This kit is made by precision CNC machines and has matt black hardcoat-anodized finishing.  It fits AKM(T.Marui GBB) only.  The kit includes a long upper rail (B-31LV), an attachment rail, a side bar and a securing mount.  It is installed in addition on our B-10L Rail (item No.2373) to upgrading the B-10L rail to a long railing system.  The upper rail must be installed above our AKM aluminium gas tube (item No.2345).  Please see our photos of installation procedure.