Troy Cqb Vertical Grip - Polymer - Black. The Troy CQB Vertical Grip - Polymer is made from advanced proprietary polymer that is chemical biological and impact resistant. Troy CQB Polymer Vetical Grips can withstand harsh environments rapidly changing mission conditions and is compatible with any MIL-SPEC M1913 Picatinny rail system. Specifications for Troy CQB Polymer Vetical Grip: Manufacturer: Troy Color: Black Gun Model: AR-15 Material: Polymer Fabric/Material: Polymer Country of Origin: USA Features of Troy CQB Polymer Vetical Grips: Compatible with any MIL-SPEC M1913 Picatinny rail system Patent Pending Made in specialized factories Package Contents: Troy CQB Polymer Vetical Grip Troy SGRI-VRT-00BT-00: Cqb Vertical Grip - Polymer - Black