Rock River is known for the quality rifles they manufacturer, now the same accessories used on the rifle are available. This lightweight extended length octagonal top rail is Mil-Spec hard coat anodized 6061 aluminum.
This Carbine free float handguard requires the use of a low profile gas block. Inclued is all the hardware for mounting and three short accessory rails; some gunsmithing is advised.
Rock River Arms
Carbine Free Float handguard