Other Equipment Parts | Tactical Grip/Panel RIS Handguard Panel   Spec: NB-20A(BK) 2-rib 1.5" Panel NB-20B(BK) 4-rib 2.65" Panel NB-20C(BK) 5-rib 3.3" Panel NB-20D(BK) 6-rib 3.9" Panel NB-20E(BK) 9-rib 5.5" Panel NB-20F(BK) 11-rib 6.5" Panel Color: Black Material: Fiber Reinforced Polymer Item No.: NB-20(BK) Suggested Retail Price: USD 15.00