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