Shop › RADICAL UPPR 762X39 16" 1-10 MLOK BL RADICAL UPPR 762X39 16" 1-10 MLOK BL $433.97 Radical Firearms Complete Upper Assembly, 7.62X39, 16" Barrel, 1:10 Twist, Black, MLOK Handguard, A2 Flash Hider RF00397 Quantity: Add To Cart Added! Radical Firearms Complete Upper Assembly, 7.62X39, 16" Barrel, 1:10 Twist, Black, MLOK Handguard, A2 Flash Hider RF00397