A3 Industries Compact Modular Vertical Foregrips Compact 3-Slot Picatinny Mounting Base With 2.75In HK Grip Aluminum Black. The two-piece design allows 5 different grip choices and theyare available in both Picatinny or M-LOK mounting patterns. Machined from 6061 aluminum and anodized in low-gloss black. Specifications for A3 Industries Compact Modular Vertical Foregrips: Manufacturer: A3 Industries Color: Black Finish: Anodized low-gloss Gun Make: Universal Gun Type: Carbine Gun Model: Universal Material: Aluminum Fabric/Material: Aluminum Mount: Aluminum Base Condition: New Package Contents: A3 Industries Compact Modular Vertical Foregrips A3 Industries VFG-159: Compact Modular Vertical Foregrips Compact 3-Slot Picatinny Mounting Base With 2.75In HK Grip Aluminum Black