AKM (T.Marui GBB) CNC 6061 Aluminium S-4 kit for B-10L

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. All products are made for airsoft only.  They are not made for real steel firearms.