5KU Aluminum PK-4 Foregrip

5KU Aluminum PK-4 Foregrip Aluminum Construction ar 15 foregrip/ AK Foregrip AK Style Foregrip Fit for mount on 20mm Picatinny Rail System Handguard Foregrips for ar 15 Also Suitable For AK Series Rifle Airsoft Guns Also Fit For Most 20mm Picatinny Rail Handguard Airsoft Rifle