Rise Armament RA-905 M-Lok Handguard, Black Finish, Fits AR Rifles, 13.5" RA-905-135-BLK
Rise Armament Slimline Handguard, Black Finish, Fits AR Rifles, 13.5" RA-901-135-BLK
Noveske Noveske Skinny Rail, M-LOK, 13.5", Black Finish, Wrench Included 05001043
Knights Armament Company URX 3.1, Rail, 13.5", Upper Receiver Extending Rail Adapter System, Black Finish 30325
Diamondhead USA, Inc. VRS-T Series 3 Free-Floating M-LOK Handguard Rail,Fits AR-15, 13.5", Black Finish 2286