RIS F4 Defense M-LOK Railed Handguard for M4/M16 Metal Full Marking CNC Machined by 6061 Aluminium Hard Coated Anodized #34;Universal Locking Nut #34; design allows this RIS to fit TM-spec AEGs as well as RS-spec PTWs and GBBRs warna Black Size tersedia 6.5 #34; 10.5 #34; 13 #34;